Comparison

The best Postmark alternatives

Postmark has the best deliverability reputation in the category and support that answers like a person. People still leave — for the per-1,000 rate, for a European region it says it won't build, or because broadcast streams aren't marketing automation.

31 alternatives below, with what each costs, what its free tier really gets you, and what it is bad at. We make one of them. It's marked, and its gaps are listed like everyone else's.

31 options Prices checked 2 August 2026 No affiliate links

The short answer

Pick by the reason you're leaving

Postmark is good at a specific thing. Replace it on the axis where it stopped being good enough for you, not on a feature matrix.

Best developer experienceResend

Thirteen official SDKs, a CLI, and $0.90 per extra 1,000 against Postmark's $1.80 on Basic.

Cheapest per emailAmazon SES

$0.16 per 1,000 — about an eleventh of Postmark's Basic overage. You build everything else.

Best EU optionAhaSend

Postmark says it has no plans to add EU servers. AhaSend keeps the data in Europe.

Best open sourceuseSend

A modern dashboard over your own Amazon SES account. AGPL-3.0, still beta.

Best when you also send campaignsEmail Bump

Segments and multi-step flows rather than broadcast streams, on one contact-priced plan. That's us.

Context

What actually goes wrong with Postmark

Worth saying first: Postmark is not a bad product, and most people who search this term are not unhappy with the delivery. They're unhappy with one of five specific things.

The per-1,000 rate. $1.80 on Basic, $1.30 on Pro, $1.20 on Platform. That's among the highest headline rates in the category — level with Mailgun's entry plan, twice Resend's $0.90, and about eleven times Amazon SES's $0.16. At 10,000 emails a month nobody notices. At 500,000 it's the line on the invoice you get asked about.

No EU region, on the record. Postmark's own EU privacy page says it currently has no plans to add servers in the EU and relies on Standard Contractual Clauses instead. That's a defensible legal position and a losing one in a procurement review that asks where the data physically sits.

Broadcast streams are not marketing automation. You can send a newsletter. You cannot build a segment from behaviour, or a four-step onboarding sequence that branches on whether someone activated. Teams that grow into needing that end up buying a second tool, which is where one platform for both starts to look appealing.

The free tier is 100 emails a month. Enough to confirm the API responds; not enough to run a staging environment, let alone a side project. Most of the alternatives here give you between 500 and 5,000.

It isn't Wildbit any more. ActiveCampaign acquired Postmark and DMARC Digests in May 2022. Nothing visibly broke, and the team said it would keep operating as before — but "independent shop obsessed with email" was a large part of why people chose it, and that sentence is now in the past tense.

The baseline

What Postmark costs, from their own pricing page

Everything below is compared against these numbers, read on 2 August 2026.

Priced on emails, with a volume slider

The plans

100 emails/moFree — 45-day retention, up to 10 servers, no overage allowed

from $15/mo

from 10,000 emails/moBasic — $1.80 per extra 1,000 — 5 domains, 15 broadcast streams

from $16.50/mo

from 10,000 emails/moPro — $1.30 per extra 1,000 — inbound, 10 domains, 30 streams

from $18/mo

from 10,000 emails/moPlatform — $1.20 per extra 1,000 — unlimited domains and streams

Worth knowing

The fine print

Overage is among the highest in the category: $1.80 per 1,000 on Basic — level with Mailgun's entry plan, twice Resend's $0.90, and about eleven times Amazon SES.
Retention is 45 days by default, and customisable up to 365 days on Pro and Platform.
There is no EU region. Postmark's own EU privacy page says it has “no plans to add servers in the EU” and relies on Standard Contractual Clauses instead.
Postmark and DMARC Digests were acquired from Wildbit by ActiveCampaign in May 2022.
Dedicated IPs start at $50/mo per IP, on Pro and above.
Broadcast streams cover newsletters, but there is no segment builder and no multi-step journeys.

The number that decides it

What the next 1,000 emails cost

Plan prices are hidden behind sliders across this whole category. The per-1,000 rate isn't — every vendor publishes it, which makes it the one honest apples-to-apples comparison available.

Provider	Per 1,000 emails	Note
Amazon SES	$0.16	Base rate for every email, not an overage
Scaleway TEM	€0.25	Base rate after the free 300 a month
Resend (Pro)	$0.90	Half Postmark's Basic rate
MailerSend (Starter)	$0.90	$1.50 on Free and Hobby
Plunk Cloud	$1.00	$0.001 per email, pay-as-you-go
Mailgun (Scale)	$1.10	$1.80 on Basic
Postmark (Platform)	$1.20	The cheapest Postmark gets
Postmark (Pro)	$1.30
Postmark (Basic)	$1.80	The entry plan most people are on
Email Bump	$0.00	No per-email meter — sending is uncapped under fair use

Published rates on 2 August 2026. A low per-1,000 rate is not the same as a low bill — Amazon SES charges almost nothing and hands you the engineering, and Email Bump's $0 is because contacts are what's metered instead.

Side by side

All 31, on the five things that decide it

Provider	Starts at	Free tier	Marketing email	Licence	Data region
Email BumpHosted	$19/mo at 10,000 contacts	5,000 contacts and 5,000 emails a month	Included — campaigns, flows, segments and the API share one bill	Proprietary	United States (Amazon SES, us-east-1)
ResendHosted	$20/mo for 50,000 emails (Pro); marketing contacts are a second plan from $40/mo	3,000 emails a month capped at 100 a day, 1 domain — plus a separate 1,000-contact marketing free plan	Broadcasts, on a separate contact-priced plan. No journey builder.	Proprietary	United States
Amazon SESHosted	$0.16 per 1,000 emails (Essentials, first 10M/mo)	Up to $200 in AWS free-tier credits for new accounts, over the first 6 months	None. SES is a sending pipe.	Proprietary	Your choice of AWS region, including several in the EU
LoopsHosted	Paid plans are priced by subscribed contacts via a slider, not published as a fixed table	1,000 contacts and 4,000 sends a month, with a Loops footer on your email	Included — that's the core of the product	Proprietary	United States
MailgunHosted	$15/mo for 10,000 emails (Basic)	100 emails a day, with 1-day log retention	Sold separately as Mailgun Optimize / Mailjet rather than bundled	Proprietary	United States or European Union, per account
MailtrapHosted	$15/mo for 10,000 emails (Basic)	4,000 emails a month, capped at 150 a day, 3 days of logs	Bulk stream on Business and above; no journey builder	Proprietary	United States, with EU sending available
MailerSendHosted	$5.60/mo for 5,000 emails (Hobby)	500 emails a month, 1 domain, 1 template	Templates and basic automation; MailerLite is the sibling product for campaigns	Proprietary	United States and European Union
Zoho ZeptoMailHosted	Credits, where 1 credit = 10,000 emails, valid 6 months	First credit free — 10,000 emails, valid for one month	None. ZeptoMail is transactional-only by policy; Zoho Campaigns is the other product.	Proprietary	Multiple, including EU data centres
AhaSendHosted	Paid tiers start at 25,000 emails/mo (Pro); the rate isn't published as a flat figure	1,000 emails a month, unlimited domains, no card required	Transactional focus; no campaign builder	Proprietary	European Union, multi-region
Scaleway TEMHosted	€0.25 per 1,000 emails after the first 300 a month (Essential)	300 emails a month, every month	Prohibited by policy — TEM is transactional only	Proprietary	European Union (multi-region, France-headquartered)
SendGridHosted	Essentials from $19.95/mo	None any more — a 60-day trial at 100 emails a day	Marketing Campaigns is a separate product with its own contact-based pricing	Proprietary	United States, with EU options on enterprise agreements
MailjetHosted	Starter $9/mo for 8,000 emails	6,000 emails a month, capped at 200 a day, 1,000 contacts	Campaigns and an editor; automation and landing pages arrive on Premium	Proprietary	European Union (France)
SMTP2GOHosted	Starter $10/mo for 10,000 emails ($100/year)	1,000 emails a month, capped at 200 a day and 25 an hour until your domain is verified	None — it's a relay	Proprietary	Servers worldwide, with location-specific options
Elastic EmailHosted	Starter $19/mo for up to 50,000 emails	1,000 contacts and 3,000 emails a month	An email designer and contact management; not a full automation platform	Proprietary	United States and European Union
MailPaceHosted	Priced on monthly volume via a slider, in your choice of currency	A 100-emails-a-month plan, available on request	None — transactional only	Proprietary	European Union
LettermintHosted	Starter from €10/mo for 10,000 emails	300 emails a month, 1 sending domain, 1 project	Broadcast emails on paid tiers, alongside transactional	Proprietary	European Union
MailerooHosted	Paid plans start above the free 3,000 emails a month	3,000 emails and 1,000 inbound a month, 2 domains, free dedicated IP	A separate campaign product; the API plans are transactional	Proprietary	Multiple
SendLayerHosted	Starter $5/mo for 1,000 emails, billed annually	A 200-email trial, plus a 14-day money-back guarantee	None — transactional only	Proprietary	United States
SweegoHosted	Individual €10/mo for 20,000–50,000 emails (€8 billed annually)	100 emails a day, unlimited domains, 7 days of logs	Transactional and inbound routing; SMS via credits	Proprietary	European Union (France)
Bird (formerly SparkPost)Hosted	Starter $20/mo	None — test API access on signup, then production needs a verified sender and a card	Part of Bird's wider CRM and messaging suite rather than the email plan	Proprietary	Multiple
Mailchimp TransactionalHosted	$20 per block of 25,000 emails, up to 20 blocks	500 test emails to your own verified domain	None — Mailchimp itself is the marketing side, and a separate subscription	Proprietary	United States
SocketLabsHosted	Core $39.95/mo, with the first month free	The first month of Core is $0	None — transactional and bulk relay	Proprietary	United States
Amazon PinpointHosted	Pay-as-you-go: first 5,000 monthly targeted endpoints free, then $0.0012 each	5,000 monthly targeted endpoints and 100,000,000 events a month	Campaigns, journeys and segmentation — all going away with the service	Proprietary	Your choice of AWS region
UniOneHosted	Standard from $6/mo for 50,000 emails	4 months free at 6,000 emails a month, plus 100 address validations	Bulk sending alongside transactional; no campaign builder or segments	Proprietary	Multiple
EmailLabsHosted	Essential 30 at €23/mo for up to 100,000 emails	STARTUP — up to 9,000 emails a month, capped at 300 a day	None — transactional and bulk relay	Proprietary	European Union (Poland), on European servers
useSend (formerly Unsend)Self-hostable	Free to run; you pay Amazon SES for the sending	Self-hosted — the software is free	Included: contacts, campaigns and transactional in one app	AGPL-3.0	Wherever you deploy it
PlunkSelf-hostable	Self-host free, or $0.001 per email on Plunk Cloud	Self-hosted — the software is free	Included: campaigns plus a trigger-and-condition automation builder	AGPL-3.0	Wherever you deploy it
FreeResendSelf-hostable	Free to run; you pay Amazon SES for the sending	Self-hosted — the software is free	None — transactional only	MIT	Wherever you deploy it
NotifuseSelf-hostable	Self-host free, or Notifuse Cloud from $16/mo	Self-hosted — the software is free	Included: visual builder, scheduling, A/B tests, segmentation	AGPL-3.0	Wherever you deploy it
listmonkSelf-hostable	Free to run; you pay your SMTP provider for the sending	Self-hosted — the software is free	That's the whole product: lists, subscribers, campaigns, templates	AGPL-3.0	Wherever you deploy it
PostalSelf-hostable	Free to run; you pay for servers and IPs	Self-hosted — the software is free	None; it's infrastructure	MIT	Wherever you deploy it

Read off each vendor's own pricing or documentation page on 2 August 2026. Where a vendor hides a price behind a slider or a sales call, the cell says so instead of guessing.

In detail

Every option, and what it's bad at

01Hosted service

Email Bump

Best for: Postmark customers who also send campaigns, and are tired of the per-1,000 overage

Marketing and transactional email in one product, billed on contacts rather than sends — so there is no per-1,000 overage rate to watch. Campaigns, flows and segments are the same plan as the API and SMTP, and the whole account is drivable from a CLI or an MCP server.

Starts at: $19/mo at 10,000 contacts
Free tier: 5,000 contacts and 5,000 emails a month
Marketing: Included — campaigns, flows, segments and the API share one bill
Data region: United States (Amazon SES, us-east-1)

What it does well

One price covers campaigns, automated flows, segments and the transactional API.
Sending is uncapped on paid plans under fair use — a viral week doesn't produce an overage bill.
Unsubscribed and bounced contacts stop counting, so the bill tracks your real audience.
Unlimited team seats and unlimited sending domains on every plan, including free.
CLI, MCP server and agent skills cover the same surface as the API, including creating the account itself.
Inbound email, SMTP on the same key, and webhooks are part of the plan, not upsells.

What to watch for

Sending is US-only today — there is no EU data region.
Not open source, and there's no self-hosted build.
The free plan puts a 'Powered by Email Bump' badge on marketing footers. Transactional sends never carry it.
Younger than Postmark or SendGrid, without their decade-plus of public deliverability history.

02Hosted service

Resend

Best for: Postmark customers who want a nicer developer experience for the same money

The obvious like-for-like move: same transactional-first shape, better tooling, and cheaper per extra email — $0.90 per 1,000 against Postmark's $1.80 on Basic. The trade is retention, which is 30 days on every Resend plan against Postmark's 45 days by default and up to 365 on Pro.

Starts at: $20/mo for 50,000 emails (Pro); marketing contacts are a second plan from $40/mo
Free tier: 3,000 emails a month capped at 100 a day, 1 domain — plus a separate 1,000-contact marketing free plan
Marketing: Broadcasts, on a separate contact-priced plan. No journey builder.
Data region: United States

What it does well

Official SDKs for 13 languages plus a CLI — the widest first-party coverage here.
react-email is open source, genuinely good, and portable to any provider.
Inbound receiving, SMTP and webhooks are all first-class.
$0.90 per extra 1,000 emails is half Postmark's Basic overage rate.

What to watch for

Transactional volume and marketing contacts are billed as two separate subscriptions.
30-day data retention on every plan, including Scale.
Overage is charged automatically per extra 1,000 emails against the card on file.
No EU region, and sending domains are capped by plan: 1 on Free, 10 on Pro.

03Hosted service

Amazon SES

Best for: High volume where you already have engineers to own the plumbing

The wholesale layer most of this list resells. Nothing is cheaper per email, and nothing asks more of you: no dashboard worth the name, no templates, no contact model, no suppression UI beyond the basics.

Starts at: $0.16 per 1,000 emails (Essentials, first 10M/mo)
Free tier: Up to $200 in AWS free-tier credits for new accounts, over the first 6 months
Marketing: None. SES is a sending pipe.
Data region: Your choice of AWS region, including several in the EU

What it does well

$0.16 per 1,000 is roughly a fortieth of Resend's Pro rate at the same volume.
Regions everywhere, so data residency is a config value.
Scales past anything a SaaS plan will sell you.

What to watch for

You build the dashboard, the templates, the retries, the suppression list and the reporting.
New accounts start in a sandbox; production access and quota increases are reviewed.
Attachments are billed separately at $0.12/GB, and deliverability tooling costs extra.

04Hosted service

Loops

Best for: SaaS teams who want lifecycle email without assembling it

Contact-priced like Email Bump, with transactional sending folded in at no extra charge. Opinionated and pleasant; less of an infrastructure product than Postmark or SES.

Starts at: Paid plans are priced by subscribed contacts via a slider, not published as a fixed table
Free tier: 1,000 contacts and 4,000 sends a month, with a Loops footer on your email
Marketing: Included — that's the core of the product
Data region: United States

What it does well

Transactional sending is included rather than billed as a second subscription.
Free plan is generous enough to run a small product on.
Genuinely quick to set up.

What to watch for

The free plan puts Loops branding in your footer and caps you at 10 emails/second.
Paid pricing lives behind a slider, which makes budgeting a guess until you sign up.
Thinner on raw email infrastructure — inbound, SMTP nuance, deep log retention.

05Hosted service

Mailgun

Best for: Teams that need an EU sending region from a large, established vendor

A veteran developer email API, now part of Sinch. US or EU sending from one account, plus validation and deliverability services sold alongside.

Starts at: $15/mo for 10,000 emails (Basic)
Free tier: 100 emails a day, with 1-day log retention
Marketing: Sold separately as Mailgun Optimize / Mailjet rather than bundled
Data region: United States or European Union, per account

What it does well

EU region on an established platform with real support contracts.
Scale at $90/mo for 100,000 emails includes a dedicated IP.
Email validation and deliverability tooling available as add-ons.

What to watch for

Log retention is 1 day on Free and Basic, 5 days on Foundation — painful when debugging.
$1.80 per 1,000 overage on Basic.
Extra dedicated IPs are $59 each per month.

06Hosted service

Mailtrap

Best for: Teams who want the test sandbox and production sending from one vendor

Best known for its email-testing sandbox, which catches staging mail before it reaches a real inbox. The sending product grew out of that and keeps the same debugging bias.

Starts at: $15/mo for 10,000 emails (Basic)
Free tier: 4,000 emails a month, capped at 150 a day, 3 days of logs
Marketing: Bulk stream on Business and above; no journey builder
Data region: United States, with EU sending available

What it does well

The staging sandbox has no real equivalent at Resend.
Free tier is 4,000 emails/month against Resend's 3,000.
Bounce categorisation and per-domain debugging are unusually good.

What to watch for

Log retention is short on cheaper plans: 3 days free, 5 days on Basic.
Dedicated IP and bulk stream only arrive on Business, which starts at $85/mo.
Two products in one console takes a minute to get used to.

07Hosted service

MailerSend

Best for: Small teams who want the cheapest paid tier with a template builder

From the MailerLite family. Drag-and-drop templates non-engineers can edit, an inexpensive entry plan, and SMS bolted on for the same money.

Starts at: $5.60/mo for 5,000 emails (Hobby)
Free tier: 500 emails a month, 1 domain, 1 template
Marketing: Templates and basic automation; MailerLite is the sibling product for campaigns
Data region: United States and European Union

What it does well

$5.60/mo for 5,000 emails is the cheapest real paid plan here.
Non-developers can edit templates without a pull request.
100 SMS a month included on every plan.

What to watch for

Free plan is 500 emails/month — a sixth of Resend's free tier.
Hobby caps you at 1 domain, 3 templates and 1,000 API requests a day.
API log retention is 7 days even on Professional.

08Hosted service

Zoho ZeptoMail

Best for: Low, spiky transactional volume you'd rather not subscribe for

Pay-as-you-go credits instead of a monthly plan. One credit is 10,000 emails and lasts six months, which suits products that send in bursts.

Starts at: Credits, where 1 credit = 10,000 emails, valid 6 months
Free tier: First credit free — 10,000 emails, valid for one month
Marketing: None. ZeptoMail is transactional-only by policy; Zoho Campaigns is the other product.
Data region: Multiple, including EU data centres

What it does well

No subscription: buy credits, use them within six months.
10,000 free emails to evaluate with is the largest trial on this list.
Backed by Zoho, with EU data-centre options.

What to watch for

Strictly transactional — marketing sending will get the account closed.
Being inside the Zoho console is a taste thing.
Credits expire; unused volume is money gone.

09Hosted service

AhaSend

Best for: Postmark customers who need the data in Europe, which Postmark says it won't do

Postmark's own EU privacy page says it has no plans to add EU servers. AhaSend is the direct answer: multi-region European infrastructure, a familiar REST API and SMTP relay, EUR billing, and a free tier with unlimited domains.

Starts at: Paid tiers start at 25,000 emails/mo (Pro); the rate isn't published as a flat figure
Free tier: 1,000 emails a month, unlimited domains, no card required
Marketing: Transactional focus; no campaign builder
Data region: European Union, multi-region

What it does well

Data stays in Europe, not just the sending — the usual gap in 'EU-friendly' claims.
Unlimited sending domains even on the free plan.
USD and EUR billing, OIDC SSO on the top tier.

What to watch for

Smaller company; fewer public deliverability case studies.
No marketing or automation side at all.
Retention is 14 days on Pro, 30 on Max.

10Hosted service

Scaleway TEM

Best for: French and EU public-sector-adjacent teams who need sovereignty on paper

European cloud infrastructure rather than a developer-experience product. Cheap per email, GDPR-clean by construction, and deliberately narrow.

Starts at: €0.25 per 1,000 emails after the first 300 a month (Essential)
Free tier: 300 emails a month, every month
Marketing: Prohibited by policy — TEM is transactional only
Data region: European Union (multi-region, France-headquartered)

What it does well

€0.25 per 1,000 undercuts every hosted SaaS here except SES.
European sovereignty story is the strongest on this list.
Scale plan at €80/mo includes 100,000 emails, a managed dedicated IP and a 99.9% SLA.

What to watch for

Marketing email is against the acceptable-use policy — this is not a newsletter tool.
No inbound email support.
Billing counts recipients, so one message with three CCs is four emails.

11Hosted service

SendGrid

Best for: Enterprise volume, and procurement teams who want Twilio on the contract

The incumbent. Owned by Twilio, sold alongside their messaging products, and built for scale most senders never reach. The free plan is gone — what's left is a 60-day trial at 100 emails a day.

Starts at: Essentials from $19.95/mo
Free tier: None any more — a 60-day trial at 100 emails a day
Marketing: Marketing Campaigns is a separate product with its own contact-based pricing
Data region: United States, with EU options on enterprise agreements

What it does well

Scale and reliability at volumes most of this list never sees.
Part of Twilio, so SMS and voice sit on the same contract.
Extensive SDK coverage and a very large body of existing integrations.
Enterprise procurement, SLAs and compliance paperwork are all in place.

What to watch for

The permanent free tier was replaced by a 60-day trial — a real change if you last looked a while ago.
Marketing Campaigns is priced separately from the Email API, so a product with a newsletter pays twice.
Higher-tier prices aren't published as a static table.
Support quality is the most consistent complaint in this category.

12Hosted service

Mailjet

Best for: Small teams who want unlimited contacts alongside a send allowance

Sinch's other email product, sitting between a transactional API and a light marketing tool. Metered on emails, and unlimited contacts from the Essential plan — an unusual combination in this category.

Starts at: Starter $9/mo for 8,000 emails
Free tier: 6,000 emails a month, capped at 200 a day, 1,000 contacts
Marketing: Campaigns and an editor; automation and landing pages arrive on Premium
Data region: European Union (France)

What it does well

Unlimited contacts from Essential at $17/mo — you're billed on sends, not list size.
A 6,000-a-month free tier with the API, SMTP relay and webhooks included.
$9/mo for 8,000 emails is among the cheapest entry plans anywhere here.
French company, so EU data handling comes as standard.

What to watch for

The free plan's 200-a-day cap bites long before the monthly one.
Automation, landing pages and team management only arrive on Premium at $27/mo.
Essential and Premium both include 15,000 emails — you pay for features, not volume, between them.
Deliverability reports are mixed, as with most generous free tiers.

13Hosted service

SMTP2GO

Best for: Reliable SMTP relay with 30 days of logs on every paid plan

Deliberately unglamorous relay infrastructure. Nothing here is fashionable and the thing people actually praise is that the logs go back thirty days on the $10 plan, which several better-known providers don't manage at ten times the price.

Starts at: Starter $10/mo for 10,000 emails ($100/year)
Free tier: 1,000 emails a month, capped at 200 a day and 25 an hour until your domain is verified
Marketing: None — it's a relay
Data region: Servers worldwide, with location-specific options

What it does well

30 days of log retention on every paid plan, including the $10 one.
$1 per extra 1,000 on Starter, dropping to $0.85 on Professional.
Professional at $75/mo includes a dedicated IP and email testing tools.
Straightforward SMTP relay that works with anything.

What to watch for

The free plan's hourly cap of 25 emails makes testing awkward until you verify a domain.
Free keeps only 5 days of logs and limits you to 2 team members.
No marketing side at all.
Phone and live chat support on free lasts 14 days.

14Hosted service

Elastic Email

Best for: High volume at a low flat rate, if you can live with the reputation risk

One of the cheapest ways to send a lot of email through a hosted product. $19/mo for 50,000 emails is roughly half what most of this list charges, and the trade is a shared sending reputation across a very price-sensitive customer base.

Starts at: Starter $19/mo for up to 50,000 emails
Free tier: 1,000 contacts and 3,000 emails a month
Marketing: An email designer and contact management; not a full automation platform
Data region: United States and European Union

What it does well

$19/mo for 50,000 emails undercuts almost every hosted competitor.
Pro at $49/mo adds inbound email processing, webhooks, sub-accounts and custom rDNS.
Reseller features and sub-accounts make it popular with agencies.
Private IPs from $40/mo, cheaper than most.

What to watch for

Low prices attract senders whose reputation you share; warm up carefully and watch your own numbers.
The free plan is 1,000 contacts and 3,000 emails.
Starter and Pro both cap at 50,000 emails — the difference is features, not volume.
Support is a paid add-on for prioritised assistance.

15Hosted service

MailPace

Best for: EU-hosted transactional email where every plan has every feature

Made in the UK, hosted in the European Union, and structured so there's nothing to unlock — unlimited domains, unlimited team members, inbound email and 30-day retention on every plan, with only volume changing.

Starts at: Priced on monthly volume via a slider, in your choice of currency
Free tier: A 100-emails-a-month plan, available on request
Marketing: None — transactional only
Data region: European Union

What it does well

Every feature is on every plan: unlimited domains, team members and webhooks.
30-day email retention regardless of what you pay.
Inbound email, bounce management and anti-spam included.
Billing in USD, GBP, EUR and several other currencies.

What to watch for

The free plan isn't advertised — you have to ask for it.
No marketing side at all.
A small team, so no enterprise procurement story.
Pricing is a slider rather than a published table.

16Hosted service

Lettermint

Best for: European teams who want a modern transactional API priced in euros

EU infrastructure, GDPR-native, and priced so you can dial the included volume to match what you actually send rather than jumping between fixed tiers.

Starts at: Starter from €10/mo for 10,000 emails
Free tier: 300 emails a month, 1 sending domain, 1 project
Marketing: Broadcast emails on paid tiers, alongside transactional
Data region: European Union

What it does well

EU-based infrastructure with GDPR compliance as the default, not an add-on.
Volume is adjustable within a plan, so you're not paying for a tier you half-use.
Broadcasts and inbound email on paid tiers, not just transactional.
Priced in euros, which removes a currency conversion from procurement.

What to watch for

The free plan is 300 emails a month with one domain.
A young company with a short public track record.
Inbound email needs a paid tier.
No campaign builder, segments or automation.

17Hosted service

Maileroo

Best for: The most generous free transactional tier, dedicated IP included

3,000 free emails a month plus 1,000 inbound, with a free dedicated IP and automatic warm-up — an unusually complete free plan for a transactional provider.

Starts at: Paid plans start above the free 3,000 emails a month
Free tier: 3,000 emails and 1,000 inbound a month, 2 domains, free dedicated IP
Marketing: A separate campaign product; the API plans are transactional
Data region: Multiple

What it does well

A free dedicated IP with automatic warm-up on the free plan, which nobody else does.
1,000 inbound emails a month included free.
Email verification API, sandbox domain and a WordPress plugin included.
SMTP relay and REST API with webhooks and full authentication support.

What to watch for

Small and young — fewer public deliverability references than the incumbents.
The free plan allows 2 domains.
Marketing lives in a separate product rather than the same plan.
Paid tiers aren't laid out as a simple published table.

18Hosted service

SendLayer

Best for: WordPress sites that need reliable SMTP for not much money

A no-frills transactional provider popular in the WordPress world, with a $5 entry plan and log retention that climbs quickly as you move up.

Starts at: Starter $5/mo for 1,000 emails, billed annually
Free tier: A 200-email trial, plus a 14-day money-back guarantee
Marketing: None — transactional only
Data region: United States

What it does well

$5/mo is the cheapest paid transactional plan in this comparison.
Log retention reaches 30 days on Growth at $25/mo.
Suppression, bounce and blocklist management included on every plan.
A 14-day, no-questions money-back guarantee.

What to watch for

Starter keeps only 3 days of logs.
1,000 emails a month on the entry plan is small.
No marketing side at all.
Headline prices are annual; monthly costs more.

19Hosted service

Sweego

Best for: French and EU teams who want email and SMS on European infrastructure

A European multichannel provider with a free tier, retention that climbs from 7 to 90 days with the plan, and SMS bought as credits rather than a second subscription.

Starts at: Individual €10/mo for 20,000–50,000 emails (€8 billed annually)
Free tier: 100 emails a day, unlimited domains, 7 days of logs
Marketing: Transactional and inbound routing; SMS via credits
Data region: European Union (France)

What it does well

€10/mo for 20,000–50,000 emails is excellent value at that volume.
Unlimited sending domains even on the free plan.
Log retention of 30 days on Individual, 60 on Startup and 90 on Scaleup.
SMS bought as credits valid for 12 months, with no setup fees.

What to watch for

The free plan's 100-a-day cap is a daily ceiling, not a monthly allowance.
7 days of log retention on free.
A dedicated IP needs Startup at €79/mo or above.
Small and French-market-focused; documentation is thinner in English.

20Hosted service

Bird (formerly SparkPost)

Best for: High-volume senders who want subaccounts and dedicated IPs at a fixed price

SparkPost was one of the largest email infrastructure providers in the world; sparkpost.com now redirects to Bird, a broader CRM and messaging company. The sending product is still there, with subaccounts and dedicated IPs on a $75 plan.

Starts at: Starter $20/mo
Free tier: None — test API access on signup, then production needs a verified sender and a card
Marketing: Part of Bird's wider CRM and messaging suite rather than the email plan
Data region: Multiple

What it does well

Premier at $75/mo includes a dedicated IP, 15 subaccounts and scheduled sending.
Volume pricing for senders above 5 million emails a month.
Deep deliverability heritage from SparkPost's infrastructure years.
SMS, WhatsApp and voice on the same platform through Bird.

What to watch for

The SparkPost brand is gone — sparkpost.com redirects to bird.com, which surprises people mid-migration.
No permanent free tier; production sending requires a payment method.
The email product now sits inside a much larger suite, so the focus is split.
Per-email rates above the plan aren't published as a simple table.

21Hosted service

Mailchimp Transactional

Best for: Teams already on a paid Mailchimp plan who need product email too

Mandrill, renamed in autumn 2025. Sold in blocks of 25,000 emails as an add-on to a paid Mailchimp plan rather than as a standalone product — which is the single most important thing to know about it.

Starts at: $20 per block of 25,000 emails, up to 20 blocks
Free tier: 500 test emails to your own verified domain
Marketing: None — Mailchimp itself is the marketing side, and a separate subscription
Data region: United States

What it does well

Block pricing is simple: $20 buys 25,000 emails and doesn't expire monthly the way a plan allowance does.
Shares an account with Mailchimp marketing, so both live in one login.
Templates and reporting inherit Mailchimp's maturity.
Transactional SMS available on Essentials and above.

What to watch for

It's an add-on: you need a legacy, Standard or Premium Mailchimp plan to buy it at all.
Capped at 20 blocks — 500,000 emails a month.
The Mandrill rename in autumn 2025 means older documentation and blog posts use a different name.
Paying for a Mailchimp Standard plan you don't otherwise need makes the effective price much higher than $20.

22Hosted service

SocketLabs

Best for: Mid-volume senders who want deliverability consulting alongside the API

A long-standing infrastructure provider that leans on hands-on deliverability help rather than developer-experience polish. Straightforward plans, a free first month, and people who will look at your sending with you.

Starts at: Core $39.95/mo, with the first month free
Free tier: The first month of Core is $0
Marketing: None — transactional and bulk relay
Data region: United States

What it does well

Pro 100k at $89.95/mo covers 100,000 emails a month.
Deliverability guidance is a genuine part of the offer, not a support tier.
The first month of Core costs nothing.
Established infrastructure with a long operating history.

What to watch for

$39.95/mo is a high floor next to SendLayer's $5 or MailerSend's $5.60.
No permanent free tier.
Developer experience is dated against Resend or Postmark.
No marketing side — no contacts, segments or campaigns.

23Hosted service

Amazon Pinpoint

Best for: Nothing new — AWS ends support on 30 October 2026

AWS's customer engagement service for email, SMS, push and voice. AWS has announced it will end support for Amazon Pinpoint on 30 October 2026, after which the console and resources are no longer available. Anyone still on it is migrating.

Starts at: Pay-as-you-go: first 5,000 monthly targeted endpoints free, then $0.0012 each
Free tier: 5,000 monthly targeted endpoints and 100,000,000 events a month
Marketing: Campaigns, journeys and segmentation — all going away with the service
Data region: Your choice of AWS region

What it does well

Deep integration with the rest of AWS, and email delivered through SES.
Genuinely pay-as-you-go with no minimum charge or contract.
Very large free allowances on events and in-app message requests.
SMS, voice, push and OTP APIs continue under AWS End User Messaging.

What to watch for

AWS ends support on 30 October 2026 — this is a migration, not a purchase decision.
Console and Pinpoint resources become unavailable after that date.
The Deliverability Dashboard is $1,250 a month.
Campaign and journey features have no direct successor inside AWS.

24Hosted service

UniOne

Best for: The cheapest way to send serious volume from a hosted provider

$6 a month for 50,000 emails, and a four-month free trial at 6,000 a month before that. Nothing else in this comparison is close on price per email from a hosted service.

Starts at: Standard from $6/mo for 50,000 emails
Free tier: 4 months free at 6,000 emails a month, plus 100 address validations
Marketing: Bulk sending alongside transactional; no campaign builder or segments
Data region: Multiple

What it does well

$6/mo for 50,000 emails works out at about $0.12 per 1,000 — SES territory, from a hosted product.
A four-month free trial is by far the longest here.
Web API, SMTP, templates and analytics included on the paid plan.
Overage drops to $0.30 per 1,000 at very high volume.

What to watch for

Very low prices attract a broad sender base on shared infrastructure; watch your own placement.
A dedicated IP is $40/mo plus a $20 setup fee.
No campaign builder, segments or automation.
Less well known in Western markets, with fewer public deliverability references.

25Hosted service

EmailLabs

Best for: European teams who need certifications on the contract, not just EU servers

Polish infrastructure with European servers, ISO 27001 and 27018, and Certified Senders Alliance membership — the compliance paperwork most providers make you ask for.

Starts at: Essential 30 at €23/mo for up to 100,000 emails
Free tier: STARTUP — up to 9,000 emails a month, capped at 300 a day
Marketing: None — transactional and bulk relay
Data region: European Union (Poland), on European servers

What it does well

9,000 free emails a month is one of the largest permanent free allowances here.
€23/mo for up to 100,000 emails is excellent value at volume.
ISO 27001 and ISO 27018 certified, with Certified Senders Alliance membership.
PRO at €69/mo includes a dedicated IP and unlimited daily sending.

What to watch for

The free plan is capped at 300 emails a day.
Log retention is 7 days on Essential and 15 on PRO.
Support packages run up to €1,800/mo for the top tier.
No marketing side: no contacts, segments or campaigns.

26AGPL-3.0

useSend (formerly Unsend)

Best for: Self-hosters who want a modern dashboard on top of their own SES account

The best-known open-source answer to this search. It wraps Amazon SES with a dashboard, contacts, campaigns and webhooks, so you pay AWS rates and keep the UI.

Starts at: Free to run; you pay Amazon SES for the sending
Free tier: Self-hosted — the software is free
Marketing: Included: contacts, campaigns and transactional in one app
Data region: Wherever you deploy it

What it does well

SES pricing with a real interface on top.
Transactional and marketing, REST API and SMTP, webhooks and inbound.
Docker images and a one-click Railway deploy.

What to watch for

Still described as beta by its own maintainers.
Bring your own AWS account, DNS, Postgres and Redis — and your own on-call.
AGPL-3.0 has real obligations if you build a product on top of it.

27AGPL-3.0

Plunk

Best for: Open-source teams who want campaigns and automation, not just an API

Transactional sending, newsletters and a workflow automation builder in one AGPL codebase, with a hosted pay-as-you-go option if you'd rather not run it.

Starts at: Self-host free, or $0.001 per email on Plunk Cloud
Free tier: Self-hosted — the software is free
Marketing: Included: campaigns plus a trigger-and-condition automation builder
Data region: Wherever you deploy it

What it does well

Automation flows out of the box, which most open-source options lack.
$0.001/email hosted pricing is genuinely pay-as-you-go — no monthly floor.
SMTP relay, so existing tooling keeps working.

What to watch for

Smaller ecosystem than the commercial APIs; fewer integrations.
AGPL-3.0 again — read it before embedding.
Self-hosting means owning deliverability, which is the hard part.

28MIT

FreeResend

Best for: Self-hosting behind Resend's API surface, whatever you're coming from

A deliberately narrow project: a self-hosted server that speaks Resend's API. Point the official Resend SDK at it with RESEND_BASE_URL and your sends go through your own SES account instead.

Starts at: Free to run; you pay Amazon SES for the sending
Free tier: Self-hosted — the software is free
Marketing: None — transactional only
Data region: Wherever you deploy it

What it does well

Drop-in: the official Resend Node SDK works against it unchanged.
MIT licensed, so no AGPL obligations.
Optional DigitalOcean integration creates the DNS records for you.

What to watch for

Small project — a few hundred stars and a short commit history. Read the code before you depend on it.
Needs Amazon SES, PostgreSQL and Node 18+ that you operate.
No campaigns, no contacts, no automation.

29AGPL-3.0

Notifuse

Best for: Self-hosters who want a visual builder and to keep their existing sending provider

Go and React, AGPL, and provider-agnostic: it drives SES, Mailgun, Postmark, Mailjet, SparkPost or plain SMTP rather than replacing them. Campaigns, A/B tests and segmentation on top.

Starts at: Self-host free, or Notifuse Cloud from $16/mo
Free tier: Self-hosted — the software is free
Marketing: Included: visual builder, scheduling, A/B tests, segmentation
Data region: Wherever you deploy it

What it does well

Bring your own delivery provider — switching costs you a config change, not a migration.
Liquid templating, REST API and webhooks for the developer side.
A hosted tier exists if self-hosting stops being fun.

What to watch for

You still need a sending provider underneath; this is the layer above it.
Younger and smaller than listmonk.
AGPL-3.0.

30AGPL-3.0

listmonk

Best for: Newsletters at volume, on hardware you already pay for

A single Go binary and a Postgres database that will happily push millions of newsletters through whatever SMTP you point it at. Mature, fast, and unapologetically list-first.

Starts at: Free to run; you pay your SMTP provider for the sending
Free tier: Self-hosted — the software is free
Marketing: That's the whole product: lists, subscribers, campaigns, templates
Data region: Wherever you deploy it

What it does well

The most established project here — over 22,000 GitHub stars and years of production use.
One binary plus Postgres. No Redis, no queue broker, no Kubernetes.
Handles very large lists on modest hardware.

What to watch for

It is not a transactional email API product — that's not what it's for.
Bring your own SMTP and your own deliverability.
The admin UI is functional rather than beautiful.

31MIT

Postal

Best for: Running your own mail server on purpose

Not an SES wrapper — a complete MTA that sends and receives. If you want to own the IPs, the queues and the reputation, this is the mature option.

Starts at: Free to run; you pay for servers and IPs
Free tier: Self-hosted — the software is free
Marketing: None; it's infrastructure
Data region: Wherever you deploy it

What it does well

MIT licensed, ~16,700 stars, years of production use.
Sends and receives — a full mail platform, not a relay.
Total control over IPs and routing.

What to watch for

You now own IP warm-up, blocklist removals and abuse handling. This is a job, not a weekend.
Needs a database, a message queue and correctly configured DNS.
Nobody to call at 3am when Gmail starts deferring you.

Migration

Moving off Postmark is a rename

Postmark's body is PascalCase with its own auth header, so this is a real edit rather than a base-URL swap. Here it is against Email Bump.

Beforeapi.postmarkapp.com

// Postmark
await fetch("https://api.postmarkapp.com/email", {
  method: "POST",
  headers: {
    "X-Postmark-Server-Token": process.env.POSTMARK_TOKEN,
    "Content-Type": "application/json",
    Accept: "application/json",
  },
  body: JSON.stringify({
    From: "[email protected]",
    To: "[email protected]",
    Subject: "Your order has shipped",
    HtmlBody: "<h1>On the way</h1>",
    TextBody: "On the way",
    MessageStream: "outbound",
  }),
})

Afteremailbump.com

// Email Bump
await fetch("https://emailbump.com/api/v1/emails", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.EMAILBUMP_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    from: "Acme <[email protected]>",
    to: "[email protected]",
    subject: "Your order has shipped",
    html: "<h1>On the way</h1>",
    text: "On the way",
  }),
})

The auth header changes: X-Postmark-Server-Token becomes a standard Authorization: Bearer.
Field names go from PascalCase to snake_case — From → from, HtmlBody → html, TextBody → text, ReplyTo → reply_to.
MessageStream has no equivalent. Marketing email lives in campaigns and flows, which carry their own unsubscribe footer automatically.
Cc and Bcc carry over as cc and bcc, and take a string or an array. Each copy is metered and tracked as its own send rather than riding along on one message id.
Tag and Metadata have no direct equivalent on the send. If you group sends by tag today, that grouping doesn't survive the move.

The rest is the same wherever you land. Re-verify each sending domain with the new DKIM records and wait on DNS. Export your suppression list from Postmark and import it before the first send, so a bounce you already paid to learn about isn't learned twice. Repoint webhooks and store the new signing secret. If you were on a dedicated IP, warm the new one rather than moving your whole volume on a Monday.

Run both for a week. Send the low-stakes traffic through the new provider first and keep the Postmark token alive until the delivery rates agree.

If you need an EU region

The European options, honestly

This is the one requirement Postmark answers with a flat no. Its EU privacy page says it currently has no plans to add servers in the EU, and points at Standard Contractual Clauses instead. If your legal team has stopped accepting that, no amount of paperwork will fix it and you need a different provider.

AhaSend is the closest replacement in feel — a familiar REST API and SMTP relay, multi-region European infrastructure, EUR billing, and 1,000 emails a month free with unlimited domains. Scaleway TEM is the sovereignty answer: €0.25 per 1,000 after 300 free a month, French-headquartered, and explicitly transactional-only — don't plan a newsletter on it. Mailgun offers an EU region on a platform procurement will recognise. MailPace and Lettermint are smaller European providers that come up repeatedly in this search.

We're US-only as well — Amazon SES in us-east-1 — so on this axis Email Bump is not an upgrade over Postmark. Worth saying plainly rather than burying.

FAQ

Postmark alternatives, asked and answered

What is the best alternative to Postmark?

Depends which part stopped fitting. If it's the per-1,000 rate, Resend at $0.90 or Amazon SES at $0.16 are the direct answers. If it's the lack of real marketing automation — segments, multi-step journeys — Email Bump or Loops. If it's European data residency, AhaSend or Scaleway TEM, because Postmark states it has no plans to add EU servers. If you want to own the stack, useSend or Plunk.

Nothing here beats Postmark at what Postmark is actually best at, which is deliverability with a human on the other end of support. If that's why you're there, the honest answer may be to stay.

Why is Postmark expensive?

The plan price isn't the issue — Basic starts at $15/mo. The per-1,000 overage is: $1.80 on Basic, $1.30 on Pro, $1.20 on Platform. That's among the highest headline rates in the category, level with Mailgun's entry plan, roughly double Resend, and about eleven times Amazon SES.

You're paying for deliverability engineering and support rather than for bytes, and for a lot of teams that's worth it. It stops being worth it the month your volume doubles.

Does Postmark have an EU region?

No. Postmark's own EU privacy page states that it currently has no plans to add servers in the EU, and that it relies on Standard Contractual Clauses for cross-border transfers instead. Data sits in US infrastructure.

If your requirement is that email data physically stays in Europe, AhaSend, Scaleway TEM and Mailgun's EU region are the ones to look at. Email Bump is US-only too, so we're not the answer to that question either.

Is Postmark still independent?

No. Postmark and DMARC Digests were acquired from Wildbit by ActiveCampaign in May 2022. The team said at the time that it would continue operating as it had.

It's not a reason to leave on its own, but it is why a lot of people re-evaluate: the small independent shop that built a reputation on craft is now a line item in a marketing automation suite.

Can I keep Postmark's message streams?

Not as such — streams are a Postmark concept. Most alternatives split transactional and marketing at the product level instead: transactional sends go through the API, and marketing goes through campaigns and flows that carry their own unsubscribe handling.

The reputation separation you were getting from streams still happens; it's just the platform's job rather than a field on the send.

How hard is it to migrate off Postmark?

Harder than moving between Resend-shaped APIs, because Postmark's body is PascalCase with its own auth header. From becomes from, HtmlBody becomes html, X-Postmark-Server-Token becomes an Authorization: Bearer header. It's a rename, not a redesign — call it an afternoon.

Then the same work you'd do moving anywhere: re-verify sending domains with new DKIM records, import your suppression list before the first send, and repoint webhooks.

Try the one we make

No per-1,000 rate to watch

Contacts are what's metered, so sending is uncapped under fair use — and campaigns, flows and segments are the same plan as the API. 5,000 contacts and 5,000 emails free, no card.

Start free Read the API docs

The best Postmark alternatives

Pick by the reason you're leaving

What actually goes wrong with Postmark

What Postmark costs, from their own pricing page

The plans

The fine print

What the next 1,000 emails cost

All 31, on the five things that decide it

Every option, and what it's bad at

Moving off Postmark is a rename

The European options, honestly

Postmark alternatives, asked and answered

What is the best alternative to Postmark?

Why is Postmark expensive?

Does Postmark have an EU region?

Is Postmark still independent?

Can I keep Postmark's message streams?

How hard is it to migrate off Postmark?

No per-1,000 rate to watch

Keep reading