Choose Mailtrap if you need
- SOC 2, ISO 27001 or SSO. We haven't found them on Postmark's website.
At a glance
- Both have a free plan.
- Postmark offers a free trial (length not stated). We haven't confirmed one for Mailtrap.
- Mailtrap's lowest paid plan is Basic at $15 per month for 10,000 emails, as of October 20, 2026.
- Postmark's lowest paid plan is Basic at $15.00 per month for 10,000 emails, as of October 20, 2026.
- Both are available on API and SMTP.
- Both work with Supabase.
- Both list GDPR.
- Only Mailtrap lists SOC 2, ISO 27001 and SSO.
- Both have a public API.
From each tool's own website, checked on the dates below, and from published reviews.
Which to choose
From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.
Choose Postmark if you need
- Integration with Zapier, Stripe or Slack. We haven't found them on Mailtrap's website.
Mailtrap
Nobody has reviewed Mailtrap yet. Its rating shows once it has 3 reviews.
Review Mailtrap
Postmark
Nobody has reviewed Postmark yet. Its rating shows once it has 3 reviews.
Review PostmarkThe facts
- What it does
- MailtrapModern email delivery for developer and product teams
- PostmarkThe email delivery service that people actually like
- Free plan
- MailtrapYes
- PostmarkYes
- Pricing
- MailtrapNot confirmed
- PostmarkNot confirmed
- Paid plans from
- Mailtrap
What they share
From the platforms and integrations each website lists.
Platforms
Both
- API
- SMTP
Only MailtrapNothing else listed
Only PostmarkNothing else listed
Integrations
Both
- Supabase
Only MailtrapNothing else listed
Only Postmark
- Zapier
- Stripe
People who switched
Reviewers who say they used one of these before the other.
No reviewer has said they moved between Mailtrap and Postmark yet.
Used either of them?
Your review makes this comparison better for the next person. Review Mailtrap or review Postmark.