Skill: Email deliverability
Diagnose why a domain's email lands in spam: SPF posture, DMARC policy, DKIM key strength, MX targets, and a composite 0–100 score. Email deliverability skill pack: one x402 payment runs 6 underlying tools (spf-check, dmarc-check, dkim-look
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 326 ms
- Price
- $0.009 per call
- Paying buyers, last 30 days
- 3 (directory's own records)
- Paid calls, last 30 days
- 4
- Category
- DNS and domains
- Address
- https://agent402.tools/api/skill/email-deliverability
Accuracy
Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.
For agents
This page as JSON: /sellers/fc3f920e5697.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).