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Alternatives · Email Sending

Postmark alternatives

Postmark compared with 8 alternatives: Twilio SendGrid, Mailgun, Resend, Amazon SES, MailerSend and 3 more.

Postmark has a free plan. Paid plans start at $15 per month for 10,000 emails. 6 of the 8 alternatives are free or have a free plan. 2 more offer a free trial.

8 tools · Listings checked up to Oct 18, 2026 · Where the facts come from

At a glance

ToolPriceFree planRuns on
PostmarkThis toolFree plan · from $15/moYesWeb
Twilio SendGridFree trial · from $19.95/moTrial onlyWeb
MailgunFree plan · from $15/moYesWeb
ResendFree plan · from $20/moYesWeb
Amazon SESFree trialTrial onlyWeb
MailerSendFree plan · from $6.30/moYesWeb
Bird EmailFree plan · from $15/moYesWeb
MailtrapFree plan · from $15/moYesWeb
SMTP2GOFree plan · from $15/moYesWeb

Price against what you get

Postmark starts at $15 a month and scores 2.7 out of 4 on features, ease of use and platforms. None of the 7 alternatives on this chart both scores higher and starts lower.

MailerSend starts lower without scoring higher.

Features, ease of use and platforms, averaged

C2.0B3.0A4.0$5$10$20$50More for lessCosts more, scores moreCosts less, scores lessCosts more, scores lessPostmarkTwilio SendGridMailgunMailerSendBird EmailMailtrapSMTP2GO

What paid plans start at, a month (each step along is roughly double) →

  • The best score at each price
  • Has a free plan
  • No free plan
The full chart of email sending services, and the best at every price

How each one differs from Postmark

  1. Twilio SendGrid

    Twilio's email API and SMTP service, priced by monthly email volume

    • Twilio SendGrid starts at $19.95 per month for 50,000 emails. Postmark starts at $15 per month for 10,000 emails.
    • Postmark has a free plan. Twilio SendGrid does not, though it has a free trial.
    • Twilio SendGrid also covers email verification.
    • Postmark also covers dMARC.

    Suits: Developers adding transactional email to an app

    Twilio SendGrid vs PostmarkTwilio SendGrid pricing and details

  2. Mailgun

    Email API and SMTP relay for developers, with list validation

    • Mailgun starts at $15 per month for 10,000 emails. Postmark starts at $15 per month for 10,000 emails.
    • Mailgun also covers email verification.
    • Postmark also covers dMARC.

    Suits: Developers sending and receiving email from an app

    Mailgun vs PostmarkMailgun pricing and details

  3. Resend

    Developer email API with React Email templates and a free tier

    • Resend starts at $20 per month for 50,000 emails, billed monthly. Postmark starts at $15 per month for 10,000 emails.
    • Resend also covers email campaigns.
    • Postmark also covers dMARC.

    Suits: Developers building with Node.js, Next.js or React

    Resend vs PostmarkResend pricing and details

  4. Amazon SES

    AWS email sending and receiving, paid per 1,000 emails

    • Postmark has a free plan. Amazon SES does not, though it has a free trial.
    • Amazon SES also covers email verification.
    • Postmark also covers dMARC.

    Suits: Developers already running their apps on AWS

    Amazon SES vs PostmarkAmazon SES pricing and details

  5. MailerSend

    Transactional email and SMS API from the team behind MailerLite

    • MailerSend starts at $6.30 per month for 5,000 emails, billed annually ($7 billed monthly). Postmark starts at $15 per month for 10,000 emails.
    • MailerSend also covers business texting, whatsApp messaging and email verification.

    Suits: Software and online stores sending receipts and notifications

    MailerSend vs PostmarkMailerSend pricing and details

  6. Bird Email

    SparkPost's successor: Bird's email API, paid from a prepaid balance

    • Bird Email starts at $15 per month, deposited to your Bird balance. Postmark starts at $15 per month for 10,000 emails.
    • Bird Email also covers email campaigns.
    • Postmark also covers dMARC.

    Suits: Existing SparkPost customers planning their next integration

    Bird Email vs PostmarkBird Email pricing and details

  7. Mailtrap

    Email API and SMTP for sending, with a sandbox for testing emails

    • Mailtrap starts at $15 per month for 10,000 emails. Postmark starts at $15 per month for 10,000 emails.
    • Mailtrap also covers email campaigns.
    • Postmark also covers dMARC.

    Suits: Developers who want testing and sending from one provider

    Mailtrap vs PostmarkMailtrap pricing and details

  8. SMTP2GO

    SMTP relay and email API priced by emails a month, with a free plan

    • SMTP2GO starts at $15 per month for 10,000 emails, billed monthly. Postmark starts at $15 per month for 10,000 emails.
    • Postmark also covers dMARC.

    Suits: Small businesses sending app or website email at low volume

    SMTP2GO vs PostmarkSMTP2GO pricing and details

Limits worth knowing in Postmark

  • There is no tier between the free 100 emails a month and the 10,000-email paid plans.
  • Billing is monthly only; the FAQ says annual plans are not offered yet.
  • Basic has no inbound email processing and caps users at 4 and sending domains at 5.
  • Dedicated IPs start at $50 a month per IP, need Pro or higher and 300,000 emails a month or more.
Postmark pricing and details

Common questions

What are the alternatives to Postmark?

The alternatives to Postmark in this directory are Twilio SendGrid, Mailgun, Resend, Amazon SES, MailerSend, Bird Email, Mailtrap and SMTP2GO. Each one has a side-by-side comparison with Postmark.

Is there a free alternative to Postmark?

Yes. Mailgun, Resend, MailerSend, Bird Email, Mailtrap and SMTP2GO have a free plan alongside paid ones.

When were these prices checked?

Every listing on this page was checked on Oct 18, 2026, against the pages it cites. Vendors change prices without notice, so confirm on their site before you buy.