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TrustSource Email Authentication Checker
x402
TrustSource Email Authentication Checker is a paid API for AI agents from api.trustsource.cc, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Checks a domain's email authentication posture (SPF, DMARC, DKIM, MX records) and returns an overall email trust score.
Price / call$0.003
Success—
StatusUnknown
How this service works
Grade a domain's email-authentication posture (SPF, DKIM, DMARC, BIMI, MX) and tell an agent whether the sender can be spoofed. Returns an A–F grade, a `spoofable` flag, the parsed DMARC policy and SPF qualifier, and specific misconfiguration issues. Use to judge a sender domain before trusting an email, or to confirm your own outreach domain won't be silently rejected by Gmail/Yahoo/Microsoft's 2026 authentication rules.
Output
Returns the domain's SPF record status, DMARC policy details, DKIM configuration, MX record presence, and an overall email trust score, giving a comprehensive picture of the domain's email authentication posture.
Example use cases
Example prompt
“Can you check the email authentication setup for paypal.com — I want to know if they have SPF, DMARC, and DKIM configured and what their overall email trust score looks like?”
Technical details
Endpoint
GEThttps://api.trustsource.cc/emailtrustWhen to prefer
Use this endpoint when you need a comprehensive, all-in-one assessment of a domain's email authentication configuration (SPF, DMARC, DKIM, MX) with a single API call. Prefer it over manual DNS lookups when you need a scored trust verdict rather than raw DNS record data, or when evaluating whether an inbound email sender domain is properly authenticated.
Side effects
- Invalid or malformed domain/email input returns an error
- Domain does not exist in DNS — returns missing record statuses
- DNS lookup timeout for slow or non-responsive name servers
- Missing required 'domain' query parameter returns 400-level error
- Rate limiting or payment failure returns 402 or 429 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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