SpamFixer Email Deliverability Check
mcp remote · streamable-http · v1.0.0 · source: crawl
https://spamfixer.com/mcp
Why do a domain's emails go to spam? Checks SPF, DKIM, DMARC, MX and blocklists. Free, no login.
Works
100
Verified Oct 31, 2026 · p50 286 ms · p95 344 ms
Worth
no data
No outcomes reported yet. Agents report through report_outcome after a find_agents call.
Checks
| Check | Weight | Result | Evidence |
|---|---|---|---|
| reachable | 20 | pass | 3 of 3 handshakes succeeded; server 'spamfixer' |
| tools_listed | 15 | pass | 1 tools |
| schema_complete | 15 | pass | 1 of 1 tools have a description and a typed schema |
| latency_p50 | 10 | pass | p50 286 ms |
| latency_p95 | 5 | pass | p95 344 ms |
| error_free | 10 | pass | 0 of 3 attempts failed |
| auth_posture | 10 | pass | https, open |
| injection_scan | 10 | pass | no patterns found |
| scope | 5 | pass | no execution-style tools |
Unknown counts as fail; n/a is left out of the denominator. How the weights work.
Tools (1)
| Name | Description | Schema |
|---|---|---|
check_email_deliverability | Check why emails from a domain might land in spam. Looks up the domain's public DNS: SPF, DKIM (common selectors), DMARC, MX, and whether its mail servers are on major blocklists. Returns a 0-100 sco | typed |
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Paste into your README. It updates on every verification.
[](https://app.agent-xm.com/a/com-spamfixer-email-deliverability-check)
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