Head-to-head
Mail Tester vs Postmaster Tools
Two leading email marketing tools, compared on pricing, features, and editorial fit. Updated for 2026.
Mail Tester
Free email spam score and deliverability test for newsletters
From $10/mo
Visit Mail TesterPostmaster Tools
Email sender analytics and delivery diagnostics from Gmail
From Free
Visit Postmaster ToolsAt a glance
| Mail Tester | Postmaster Tools | |
|---|---|---|
| Tagline | Free email spam score and deliverability test for newsletters | Email sender analytics and delivery diagnostics from Gmail |
| Pricing model | Freemium | Free |
| Starts at | $10/mo | Free |
| Founded | — | — |
| AI-native | ||
| Categories | Email Marketing | Analytics, Email Marketing |
| Vendor claimed |
Quick take
Pick Mail Tester if you need free email spam score and deliverability test for newsletters. Pick Postmaster Tools if you need email sender analytics and delivery diagnostics from gmail.
Browse more
Mail Tester alternatives →
Browse more
Postmaster Tools alternatives →
Frequently asked
- Is Mail Tester better than Postmaster Tools?
- It depends on your use case. Mail Tester is free email spam score and deliverability test for newsletters, while Postmaster Tools is email sender analytics and delivery diagnostics from gmail. See the comparison above for which fits your team.
- What's the price difference between Mail Tester and Postmaster Tools?
- Mail Tester starts at $10/mo. Postmaster Tools starts at Free.
- Can I migrate from Mail Tester to Postmaster Tools?
- Most tools in this category support data import via CSV. For complex migrations, both vendors offer onboarding assistance on higher-tier plans.