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Email Domain Routing Check
x402
Email Domain Routing Check 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 the format of an email address and checks whether its domain has MX (Mail Exchanger) 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 Email 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 submitted email address passes format/shape validation and whether its domain has MX DNS records configured, indicating the domain is set up to receive email. Does not confirm inbox existence or attempt delivery.
Example use cases
Pre-signup email validation
“Before we add this new user to our system, can you check if the email they entered — support@startupxyz.com — is valid and whether that domain has mail routing configured?”
Bulk list hygiene pre-check
“I'm about to send a campaign to a list of leads. Can you check whether the domain on this address, contact@bizpartner.net, actually has MX records so I'm not wasting sends on unroutable domains?”
Developer form input testing
“I'm testing our registration form — can you validate whether 'notareal@@baddomain..com' passes format checks and if its domain has any MX records?”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/demand-domain-email-domain-check-email-operations?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, low-cost DNS-level check to filter out obviously invalid or unroutable email addresses before storing, messaging, or processing them. It is ideal for pre-validation at form submission, list hygiene, or lead qualification pipelines where you need more than format-checking but do not need full SMTP mailbox verification.
Side effects
- Malformed email input that fails basic shape check — returns invalid format error
- Domain exists but has no MX records — reported as unroutable even if domain is live
- Temporary DNS lookup failure — may return inconclusive result
- Email format is valid but domain is a known catch-all or non-existent TLD — DNS check may still fail
- Missing or empty email field — returns missing parameter error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string | Email address to inspect. |
Tags
x402
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