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Email Address Validator
x402
Email Address Validator is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Validates an email address for deliverability by checking syntax, domain MX records, disposability, role-based patterns, free webmail status, and SPF/DMARC presence, returning a deliverable/risky/undeliverable verdict with reason.
Price / call$0.01
Success—
StatusUnknown
How this service works
Validate email address: checks syntax, whether the domain exists and accepts mail (MX records), disposable or temporary email domains, role addresses (info@, admin@), free webmail providers and SPF/DMARC presence, then returns deliverable / risky / undeliverable with the reason. Email validation for signups, lead lists and CRM cleaning, no API key. $0.01 per address.
Output
Returns a deliverability verdict (deliverable, risky, or undeliverable) along with the reason — covering syntax errors, missing or invalid MX records, disposable/temporary domain detection, role-address flags (e.g. info@, admin@), free webmail provider identification, and SPF/DMARC record presence.
Example use cases
Signup form email screening
“Before I let this user register, check if the email they provided — support@guerrillamail.com — is deliverable or if it's a disposable or role-based address I should reject.”
Lead list CRM cleaning
“I've got a lead email address, ceo@startupco.io — can you validate it and tell me if the domain actually accepts mail and whether there are any deliverability risks before I import it into the CRM?”
Outbound campaign pre-send check
“Before we send the campaign, can you verify that newsletter@bigcompany.net is a legitimate deliverable address and not a role alias or a domain with no MX records?”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/validate-emailWhen to prefer
Choose this endpoint when you need a quick, no-API-key, pay-per-use email validation that goes beyond simple syntax checking — particularly when you need to detect disposable addresses, role accounts, webmail providers, and DNS mail hygiene (MX, SPF, DMARC) in a single call. Ideal for signup gatekeeping, pre-campaign list scrubbing, or CRM enrichment at $0.01 per address without subscription overhead.
Side effects
- Missing email query parameter — returns error requiring input
- Invalid or malformed URL passed instead of email address — may return syntax error verdict
- Domain exists but mail server is temporarily unreachable — may return risky or undeliverable incorrectly
- Very new domains with no established DNS records may be flagged as undeliverable even if legitimate
- Rate limiting or payment failure returns 402 or error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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