SendBridge Mail Tester
Free email deliverability and spam score test with SPF, DKIM, DMARC, Rspamd analysis, and 23+ blacklist lookups.
SendBridge Mail Tester is a free web tool for testing email deliverability. It generates a unique temporary email address; users send a message from their sending infrastructure, and the tool analyzes authentication (SPF, DKIM, DMARC), spam scoring via Rspamd, reverse DNS, DNS configuration, content quality, link validation, TLS, technical headers, and HELO/EHLO match, plus checks against 23+ RBL blacklists. It returns a 0-100 score with fix recommendations, shareable public report URLs, and embeddable score badges. No signup required and tests are unlimited; test data is deleted after 7 days.
- Category
- Email & messaging
- Pricing
- free
- Free tier
- yes
- API
- no
- MCP server
- no
- SDK
- no
- Open source
- unknown
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Listed 2026-10-22 · last verified 2026-10-22 · extracted by @cf/zai-org/glm-5.3-flash · confidence 0.85
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API
curl https://toolgrep.com/api/products/sendbridge-mail-tester