toolgrep / Email & messaging / SendBridge Mail Tester
Alternatives to SendBridge Mail Tester
SendBridge Mail Tester: Free email deliverability and spam score test with SPF, DKIM, DMARC, Rspamd analysis, and 23+ blacklist lookups. 8 products similar to SendBridge 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.
- Mail-Tester
Test your emails for spam score and configuration problems
- 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
- Mailtrap
Email delivery platform for developer and product teams: Email API/SMTP sending, email testing sandbox, and email marketing.
- 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.
- Suped
All-in-one DMARC platform
- DebugMail
Fake SMTP server for testing emails
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| SendBridge Mail Tester | Free | yes | no | no | no | — |
| Email Spam Tester | Free | yes | yes | yes | no | no |
| Mail-Tester | Freemium | yes | 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 |
| Mailtrap | Freemium · from $15 | yes | yes | yes | yes | no |
| emailvalidation.io | Freemium | yes | yes | yes | yes | no |
| Suped | Freemium | yes | yes | yes | — | no |
| DebugMail | Freemium · from $2 | yes | no | no | no | 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
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