Best testmail.app Alternatives in 2026
Updated
20 apps from email testing software ranked against testmail.app on the same published basis.
- 1testmail.app vs Mailpit
- 2testmail.app vs Twilio Segment
- 3testmail.app vs MailHog
- 4testmail.app vs MailSlurp
- 5testmail.app vs Emailens
- 6testmail.app vs GlockApps
- 7testmail.app vs Mailinator
- 8testmail.app vs Mailtrap Email Sandbox
- 9testmail.app vs SMTP Labs
- 10testmail.app vs Unspam.email
- 11testmail.app vs Ethereal Email
- 12testmail.app vs MailDev
- 13testmail.app vs Mailgun
- 14testmail.app vs MailCatcher
- 15testmail.app vs Twilio Email Testing
- 16testmail.app vs Litmus
- 17testmail.app vs Inbox Monster
- 18testmail.app vs Mailosaur
- 19testmail.app vs SendForensics
- 20testmail.app vs EmailQA
testmail.app alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Mailpit | 7.4 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 2 | Twilio Segment | 7.2 | Free plan | $120/mo | Web, iOS, Android |
| 3 | MailHog | 7.0 | Free plan | Free | API, Linux, Mac, self-hosted, Web |
| 4 | MailSlurp | 7.0 | Free plan | $19.99/mo | API, Web |
| 5 | Emailens | 6.9 | Free plan | $9/mo | API, Browser, Web |
| 6 | GlockApps | 6.9 | Free plan | $59/mo | API, Web |
| 7 | Mailinator | 6.9 | Free plan | $79/mo | API, Web |
| 8 | Mailtrap Email Sandbox | 6.9 | Free plan | $17/mo | API, Web |
| 9 | SMTP Labs | 6.9 | Free plan | $7/mo | API, Web |
| 10 | Unspam.email | 6.8 | Free plan | $5/mo | API, Web |
| 11 | Ethereal Email | 6.7 | Free plan | Free | API, Web |
| 12 | MailDev | 6.7 | Free plan | Free | API, self-hosted, Web |
| 13 | Mailgun | 6.5 | Free plan | Free | Web |
| 14 | MailCatcher | 6.3 | No | — | API, Linux, Mac, self-hosted, Web |
| 15 | Twilio Email Testing | 6.3 | No | $15/mo | Web |
| 16 | Litmus | 6.2 | No | $99/mo | API, Browser, Web |
| 17 | Inbox Monster | 6.1 | No | $312.50/mo | Web |
| 18 | Mailosaur | 6.1 | No | $20/mo | API, Web |
| 19 | SendForensics | 6.1 | No | $49/mo | Web |
| 20 | EmailQA | 5.9 | No | — | Web |
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Questions about testmail.app alternatives
What is the best alternative to testmail.app?
Mailpit, number 1 in email testing software with a score of 7.4 out of 10. The others here: Twilio Segment, MailHog, MailSlurp and 16 more.
What is the best free alternative to testmail.app?
Mailpit is the best-ranked alternative with a free plan. 13 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on.