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Email Verify API – MX Record Lookup
x402
Email Verify API – MX Record Lookup is a paid API for AI agents from email.payapi.market, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-17).
Fetches raw MX (Mail Exchange) DNS records for a given domain, enabling email deliverability validation and mail server discovery.
Price / call$0.001
Success—
StatusUnknown
How this service works
Email verification with x402 payments. $0.001 per request in USDC on Base.
Output
Returns a JSON object containing the queried domain and an array of MX record objects, each with an 'exchange' field (the mail server hostname) and a 'preference' field (priority integer). Lower preference values indicate higher priority mail servers.
Example use cases
Pre-send email deliverability check
“Before I send out this marketing campaign, check whether the domain techcrunch.com actually has MX records configured so I know the emails won't bounce.”
Validate user email domain on signup
“A user just signed up with an email at randomdomain.xyz — can you check if that domain has any MX records so I can tell if it's a real email address or a throwaway?”
Audit partner domain mail infrastructure
“We're onboarding a new partner at acme.com — can you pull their MX records so our IT team can verify their mail infrastructure before we whitelist them?”
Technical details
Endpoint
POSThttps://email.payapi.market/mx-lookup?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need raw MX record data for a specific domain, particularly for email validation workflows, deliverability pre-checks, or DNS auditing. It is ideal for lightweight, per-domain lookups with micropayment billing via x402/USDC on Base, making it suitable for high-volume automated pipelines where pay-per-use is preferred over subscription plans.
Side effects
- Domain has no MX records — returns empty mx_records array
- Invalid or malformed domain input — may return an error or empty result
- Domain does not exist (NXDOMAIN) — lookup fails or returns empty
- DNS timeout or upstream resolver failure — service may return error
- Malformed request body missing the domain field — request rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | Domain to fetch raw MX records for, e.g. 'acme.com'. |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "acme.com",
"mx_records": [
{
"exchange": "aspmx.l.google.com",
"preference": 1
},
{
"exchange": "alt1.aspmx.l.google.com",
"preference": 5
}
]
}
}Tags
x402
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