toolgrep / Email & messaging / Email Spam Tester
Alternatives to Email Spam Tester
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. 8 products similar to Email Spam Tester, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 5 of 8 have an API, 2 of 8 offer an MCP server.
- Mail-Tester
Test your emails for spam score and configuration problems
- 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.
- 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.
- Verimail
Email verification that shows its work
- Mailsac
Disposable test email addresses for QA and developers
- DebugMail
Fake SMTP server for testing emails
- Mailinator
Email and SMS workflow testing for developers and QA teams
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Email Spam Tester | Free | yes | yes | yes | no | no |
| Mail-Tester | Freemium | yes | yes | no | no | no |
| SendBridge Mail Tester | Free | yes | no | no | no | — |
| dkimvalidator.com | Free | yes | no | no | no | no |
| emailvalidation.io | Freemium | yes | yes | yes | yes | 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 |
| Mailsac | Freemium · from 0 | yes | yes | yes | yes | no |
| DebugMail | Freemium · from $2 | yes | no | no | no | no |
| Mailinator | Freemium | yes | yes | no | 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
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