Mailpit vs MailSlurp
On the evidence we track, MailSlurp leads this comparison with a composite score of 50/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Capabilities
Feature-by-feature on the axes that matter for email testing dev. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Mailpit
A minimal email testing tool that intercepts SMTP traffic and provides a web UI plus REST API for validating and testing email functionality during development.
MailSlurp
LeaderA testing and automation platform providing real email inboxes and phone numbers via APIs and SDKs, enabling developers to verify email flows, OTP delivery, and message behavior in automated tests and CI/CD pipelines.
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
Mailpit
- SpamAssassin
MailSlurp
Leader- Zapier
- Gmail
- Outlook
- Dropbox
- Google Drive
- Playwright
- CypressJS
- ACCELQ
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.