toolgrep / Email & messaging / Mail-Tester
Alternatives to Mail-Tester
Mail-Tester: Test your emails for spam score and configuration problems. 8 products similar to Mail-Tester, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 6 of 8 have an API, 4 of 8 offer an MCP server.
- Email Spam Tester
Free email spam checker: send one message and get a SpamAssassin score, SPF, DKIM and DMARC checks, blocklists and optional inbox placement. No signup.
- SendBridge Mail Tester
Free email deliverability and spam score test with SPF, DKIM, DMARC, Rspamd analysis, and 23+ blacklist lookups.
- dkimvalidator.com
Email validator that checks DKIM, SPF validity and SpamAssassin score by sending an email to any address @dkimvalidator.com.
- Verimail
Email verification that shows its work
- Suped
All-in-one DMARC platform
- emailvalidation.io
Free email checker and validator: verify any email address with syntax, MX record and live mailbox checks, validate lists in bulk or use the API.
- EmailLabs
Cloud-based SMTP service and email API for sending and tracking transactional and marketing emails
- Mailtrap
Email delivery platform for developer and product teams: Email API/SMTP sending, email testing sandbox, and email marketing.
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Mail-Tester | Freemium | yes | yes | no | no | no |
| Email Spam Tester | Free | yes | yes | yes | no | no |
| SendBridge Mail Tester | Free | yes | no | no | no | — |
| dkimvalidator.com | Free | yes | no | no | no | no |
| Verimail | Freemium · from $15/month (Starter plan); pay-as-you-go credits from $4 per 1,000 down to $0.32 per 1,000 | yes | yes | no | no | no |
| Suped | Freemium | yes | yes | yes | — | no |
| emailvalidation.io | Freemium | yes | yes | yes | yes | no |
| EmailLabs | Freemium · from 0 PLN/month (Startup plan, up to 9,000 emails/month, 300 emails/day limit); paid plans from 99 PLN/month (Essential 30, up to 100,000 emails/month) | yes | yes | no | yes | no |
| Mailtrap | Freemium · from $15 | yes | yes | yes | yes | no |
Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.
API
curl https://toolgrep.com/api/products/mail-tester/alternatives