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If price is pushing you off Postmark, start with SMTP2GO at $10/month, Mailgun at $15, or Resend if you want a free plan and can accept that paid pricing isn’t published here. SES lists a $0 base fee, but the published material doesn’t verify its capabilities. One Reddit thread reports a Postmark price increase; the excerpt doesn’t give the new prices. We’d compare your actual usage and required features before treating any alternative as a like-for-like replacement.
01Why people leave Postmark
Reported price increases
A Reddit thread says Postmark was raising prices for everyone. The excerpt gives no new rates, so confirm your own quote before switching.
A small free tier
Our comparison flags Postmark’s free tier as small, but doesn’t publish its cap. Check the current allowance against your sending volume.
Agency costs need scrutiny
The comparison flags agency costs as worth reviewing. It provides no agency-specific price, so check how your account’s usage and streams affect the bill.
02The alternatives, ranked by fit
- API-first developers
ResendResendResend is a good first comparison if you want a developer-focused transactional email service with a free plan. Our comparison rates it 7.2, but doesn’t list a paid starting price. One Reddit commenter describes its free tier as generous; that’s an individual report, not a published sending limit.
Trade-off: Paid pricing isn’t published here, and reliability reports are mixed.
7.2/10from
Freefree plan - Modest sending volumes
SMTP2GOSMTP2GOSMTP2GO is listed from $10/month with a free plan, and the comparison positions it for transactional delivery, reports and support channels. That makes it worth checking if you want a priced alternative rather than an undisclosed paid plan. The published material describes it as suitable for modest volumes.
Trade-off: Compare its monthly cost with usage-based options before switching.
7.8/10from
$10/mofree plan - API and SMTP
MailgunMailgunMailgun is listed from $15/month with a free plan, and the comparison identifies both API and SMTP sending plus email validation tools. It fits teams looking for a transactional service with those options. Its free tier allows 100 emails per day, which the comparison characterizes as narrow for testing.
Trade-off: The 100-email daily free limit may not suit larger tests.
7.2/10from
$15/mofree plan - Pay-per-use pricing
Amazon Simple Email Service (SES)Amazon Simple Email Service (SES)SES is listed with a $0 base fee, and the comparison identifies pay-per-use billing as its appeal. That makes it worth investigating if you want to compare usage-based costs with Postmark’s plans. But the published material leaves SES capabilities unverified, so don’t treat the listing as confirmation that it replaces your Postmark setup.
Trade-off: The published material does not verify its capabilities.
3.0/10from
Freefree plan - Email API and campaigns
Twilio SendGridTwilio SendGridTwilio SendGrid is listed from $19.95 and covers email API sending, SMTP service and campaign tools. It may suit teams that want transactional and campaign email in one toolkit. The comparison specifically warns buyers to check sending caps and account approval risk before switching; the published material gives no cap figures.
Trade-off: Check sending caps and account approval risk before migrating.
6.2/10from
$19.95/mo - Email and messaging
MailerSendMailerSendMailerSend is listed from $5.60 with a free plan, and the comparison describes email, SMS and WhatsApp options. It could suit a small project that wants to start on a free tier or a team considering more than email. The published material doesn’t give its free-tier caps.
Trade-off: Check usage caps, add-on costs and support caveats.
7.2/10from
$5.60/mofree plan - Transactional and marketing
SparkPostSparkPostSparkPost is listed from $15 with a free plan and is positioned for transactional and marketing email, plus inbound reply routing. That combination may fit teams consolidating several email needs. The comparison describes its tools as flexible, but advises checking usage math and support risk before committing.
Trade-off: Usage costs and support risk need closer review.
6.5/10from
$15/mofree plan - Testing and sending
MailtrapMailtrapMailtrap is listed from $12 with a free plan and combines email testing with sending. It may suit developers who want staging email tools alongside sending, rather than a transactional-only replacement. The comparison warns that the products have separate pricing and usage caps, so check both before comparing its total cost with Postmark.
Trade-off: Testing and sending have separate pricing and caps.
7.2/10from
$12/mofree plan
03Side by side
| Tool | Score | From | Free plan | Best for |
|---|---|---|---|---|
 Postmark Postmark (current) | 7.4 | $15/mo | Yes | Transactional email for applications |
| Resend Resend | 7.2 | Free | Yes | Developers sending transactional email |
| SMTP2GO SMTP2GO | 7.8 | $10/mo | Yes | Apps needing transactional email delivery |
| Mailgun Mailgun | 7.2 | $15/mo | Yes | Developers sending transactional email |
| Amazon Simple Email Service (SES) Amazon Simple Email Service (SES) | 3.0 | Free | Yes | Teams seeking pay-per-use email billing |
| Twilio SendGrid Twilio SendGrid | 6.2 | $19.95/mo | No | Teams sending through an email API |
| MailerSend MailerSend | 7.2 | $5.60/mo | Yes | Apps sending transactional email |
| SparkPost SparkPost | 6.5 | $15/mo | Yes | Teams sending transactional and marketing email |
| Mailtrap Mailtrap | 7.2 | $12/mo | Yes | Developers testing staging emails |
Questions people ask
Which Postmark alternative is cheapest?
SES has the lowest listed starting figure at $0, but that is a base fee, not a stated total bill. Among the other listed starting prices, MailerSend is $5.60, SMTP2GO is $10 and Mailtrap is $12. Compare usage charges and plan limits before deciding which costs less for your volume.
Which alternative has a free plan?
Our comparison lists free plans for Resend, Mailgun, SMTP2GO, MailerSend, SparkPost and Mailtrap. It doesn’t provide a free-tier sending limit for most of them. Mailgun’s listed free allowance is 100 emails per day; check each provider’s current plan details before switching.
Are Postmark prices going up?
One Reddit thread reports that Postmark was raising prices for everyone, but the published excerpt doesn’t include new rates or confirm the scope. Our comparison lists Postmark from $15 with a free plan. Check Postmark’s pricing page or your account quote for current prices before moving.