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Email Domain MX Record Validator
x402
Email Domain MX Record Validator is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).
Validates an email address format and checks whether its domain has MX (mail exchange) DNS records, without sending any email or verifying inbox existence.
Price / call$0.01
Success—
StatusUnknown
How this service works
Email domain routing check for Sales operations: Validate an email address shape and check whether its domain has MX records. DNS data only; does not send email or verify that an inbox exists.
Output
Returns whether the email address string is correctly formatted (valid shape) and whether the domain portion has MX records present in DNS, indicating the domain is configured to receive email. Does not confirm inbox existence or send any messages.
Example use cases
Pre-CRM lead email screening
“Before I import this list of sales leads into our CRM, can you check whether john.doe@prospectco.com has a valid email format and that prospectco.com has MX records configured?”
Outbound campaign domain hygiene
“We're about to launch an email campaign — can you verify that contact@bigclient.io is well-formed and that bigclient.io has DNS mail routing set up, so we don't waste sends on a broken domain?”
Signup form email pre-validation
“A user just entered support@newstartup.xyz on our sign-up form — can you quickly check if that email looks valid and if the domain actually has mail exchange records before we accept it?”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/demand-domain-email-domain-check-sales-operations?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, low-cost ($0.01) check to confirm that an email address is syntactically valid AND that its domain is DNS-routable for mail, without actually sending a message or doing a full SMTP handshake. Ideal for pre-CRM import screening, sales prospecting list hygiene, or signup form validation pipelines where speed and cost matter more than full inbox verification.
Side effects
- Malformed input — email field is empty or missing, returns validation error
- Domain has no MX records — valid format but domain cannot receive email
- DNS lookup timeout — transient network issue prevents MX record resolution
- Invalid email shape — missing @ symbol or domain part, fails format check
- Payment failure — insufficient USDC balance for the $0.01 per-call fee
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string | Email address to inspect. |
Tags
x402
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