Choose MailerSend if you need
- Integration with Firebase, Laravel or Make. We haven't found them on Postmark's website.
- 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 MailerSend.
- MailerSend's lowest paid plan is Professional at $99.00 per month, billed yearly, 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 Zapier, Supabase and Slack.
- Both list GDPR.
- Only MailerSend lists 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
No checked fact sets Postmark apart from MailerSend yet.
MailerSend
Nobody has reviewed MailerSend yet. Its rating shows once it has 3 reviews.
Review MailerSend
Postmark
Nobody has reviewed Postmark yet. Its rating shows once it has 3 reviews.
Review PostmarkThe facts
- What it does
- MailerSendTeam-friendly email API for modern apps
- PostmarkThe email delivery service that people actually like
- Free plan
- MailerSendYes
- PostmarkYes
- Pricing
- MailerSendNot confirmed
- PostmarkNot confirmed
- Paid plans from
- MailerSendProfessional: $99.00 per month, billed yearly
What they share
From the platforms and integrations each website lists.
Platforms
Both
- API
- SMTP
Only MailerSendNothing else listed
Only PostmarkNothing else listed
Integrations
Both
- Zapier
- Supabase
- Slack
Only MailerSend
- Firebase
- Laravel
People who switched
Reviewers who say they used one of these before the other.
No reviewer has said they moved between MailerSend and Postmark yet.
Used either of them?
Your review makes this comparison better for the next person. Review MailerSend or review Postmark.