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FiatDock Email Deliverability Check
x402
FiatDock Email Deliverability Check is a paid API for AI agents from fiatdock.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).
Checks the deliverability of an email address by analyzing syntax, DNS/MX records, and inbox-level signals
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call: Email Deliverability
Output
Returns deliverability assessment for the given email address, including syntax validity, MX record presence, domain mail configuration, inbox-level reachability signals, and any risk flags such as disposable or catch-all domains.
Example use cases
CRM lead email validation
“Before we import this list of leads into our CRM, can you check if the email address sarah.jones@acmecorp.io is deliverable and likely to accept mail without bouncing?”
Reduce bounce rate before campaign
“We're about to send a marketing email to newsletter@techstartup.co — can you verify that email address is deliverable and the domain actually has working mail servers set up?”
Detect fake signup email
“A user just signed up with the email dropbox123@mailinator.com — can you check if that's a real deliverable inbox or a throwaway/disposable address?”
Technical details
Endpoint
GEThttps://fiatdock.com/s/svc_2b5f41de-170a-4a11-a45c-2bd46e445d18?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a deeper deliverability signal beyond basic syntax checking — it goes beyond format validation to probe DNS/MX infrastructure and inbox-level signals. Prefer it over the sibling 'Email syntax + MX check' endpoint when you need a fuller deliverability score including risk classification. Best for pre-send validation, lead qualification, or signup fraud detection at $0.01 per check.
Side effects
- Missing or malformed email address argument returns argument error (call is still billed)
- Domain has no MX records — reported as undeliverable
- Catch-all domains may show as deliverable even if specific inbox does not exist
- Temporary DNS lookup failures may cause inconclusive results
- Rate limits or timeouts on MX probing may reduce accuracy
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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