Best Mail-Tester Alternatives in 2026
Updated
20 platforms from email deliverability software ranked against Mail-Tester on the same published basis.
- 1Mail-Tester vs Postmark
- 2Mail-Tester vs EasyDMARC
- 3Mail-Tester vs GlockApps
- 4Mail-Tester vs TrueSend
- 5Mail-Tester vs Unspam.email
- 6Mail-Tester vs Mailreach
- 7Mail-Tester vs MailMonitor
- 8Mail-Tester vs Warmup Inbox
- 9Mail-Tester vs SenderSignal
- 10Mail-Tester vs DMARC Report
- 12Mail-Tester vs Microsoft SNDS
- 13Mail-Tester vs Palisade
- 14Mail-Tester vs Suped
- 15Mail-Tester vs Validity Engage
- 16Mail-Tester vs dmarcian
- 17Mail-Tester vs Folderly
- 18Mail-Tester vs Fraudmarc
- 19Mail-Tester vs InboxAlly
- 20Mail-Tester vs Red Sift OnDMARC
- 21Mail-Tester vs Valimail Monitor
Mail-Tester alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Postmark | 7.4 | Free plan | $5/mo | API, Web |
| 2 | EasyDMARC | 7.2 | Free plan | $35.99/mo | API, Web |
| 3 | GlockApps | 7.2 | Free plan | $59/mo | API, Web |
| 4 | TrueSend | 7.2 | Free plan | Free | API, Web |
| 5 | Unspam.email | 7.2 | Free plan | $5/mo | API, Web |
| 6 | Mailreach | 6.8 | No | $19.50/mo | API, Web |
| 7 | MailMonitor | 6.7 | No | $83.33/mo | API, Web |
| 8 | Warmup Inbox | 6.7 | No | $15/mo | API, Web |
| 9 | SenderSignal | 5.4 | No | — | Web |
| 10 | DMARC Report | 5.1 | No | — | Web |
| 12 | Microsoft SNDS | 5.1 | No | — | Web |
| 13 | Palisade | 5.1 | No | — | Web |
| 14 | Suped | 5.1 | Free plan | $19/mo | Web |
| 15 | Validity Engage | 5.1 | No | — | Web |
| 16 | dmarcian | 5.0 | No | — | Web |
| 17 | Folderly | 5.0 | No | — | Web |
| 18 | Fraudmarc | 5.0 | No | — | Web |
| 19 | InboxAlly | 5.0 | No | — | Web |
| 20 | Red Sift OnDMARC | 5.0 | No | — | Web |
| 21 | Valimail Monitor | 5.0 | No | — | Web |
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Questions about Mail-Tester alternatives
What is the best alternative to Mail-Tester?
Postmark, number 1 in email deliverability software with a score of 7.4 out of 10. The others here: EasyDMARC, GlockApps, TrueSend and 16 more.
What is the best free alternative to Mail-Tester?
Postmark is the best-ranked alternative with a free plan. 6 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, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.