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Email Address Validator
x402
Email Address Validator is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0324/call, status unknown (last checked 2026-09-14).
Validates an email address for RFC 5322 syntax, MX records, disposable domain detection, role-based address detection, free provider detection, and typo suggestions with deliverability scoring.
Price / call$0.0324
Success—
StatusUnknown
How this service works
Validate an email address: RFC 5322 syntax, MX records, 5,361 disposable domain detection, role-based address detection (35 patterns), free provider detection, and typo suggestion for common providers (gmial.com ? gmail.com). Returns deliverability assess…
Output
A structured deliverability assessment with per-check breakdown including: RFC 5322 syntax validity, MX record lookup result, disposable domain detection (against 5,361 known domains), role-based address detection (35 patterns), free provider flag, and a typo suggestion if the domain closely matches a common provider (e.g. gmial.com → gmail.com).
Example use cases
Clean customer signup email list
“I'm getting a lot of signups but some emails look suspicious. Can you go through our list and flag any disposable domains, role-based addresses, or obvious typos so we know which ones are probably real people?”
Catch typos before sending campaigns
“Before we send out our newsletter, can you validate all the email addresses in our database and tell me which ones might have typos like gmial instead of gmail? I don't want bounces.”
Verify email validity at checkout
“When customers enter their email at checkout, can you quickly check if it's actually valid, deliverable, and not some throwaway address they won't actually use?”
Technical details
Endpoint
GEThttps://api.strale.io/x402/email-validateWhen to prefer
Use this endpoint when you need a comprehensive, multi-signal email validation that goes beyond simple regex checks — specifically when you need disposable domain detection, role-based address identification, typo correction suggestions, and MX record verification all in a single call. Prefer this over basic syntax checkers when cleaning user-submitted email lists, gating signups, or assessing email deliverability risk.
Side effects
- Missing or malformed email query parameter returns an error
- Network or DNS timeout during MX record lookup may affect deliverability result
- Edge-case email formats that technically satisfy RFC 5322 may still fail domain lookup
- Unknown disposable domains not in the 5,361-entry list will not be flagged
- Payment not included or invalid returns 402 Payment Required
Input
{
"email": "zero-qa@agentmail.to"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| emailrequired | string | Email address to validate |
Output
{
"_meta": {
"payment": {
"method": "x402",
"price_usd": 0.0324,
"settlement_id": "0xc1b00c6446f97f24df026ba6f9a45357de88a3ff9f08fc2ddb59c4b34c2ef6d7"
},
"capability": "email-validate",
"latency_ms": 2,
"provenance": {
"source": "algorithmic+dns",
"fetched_at": "2026-06-16T01:24:32.503Z"
}
},
"email": "zero-qa@agentmail.to",
"valid": true,
"domain": "agentmail.to",
"mx_records": [
"inbound-smtp.us-east-1.amazonaws.com"
],
"format_valid": true,
"is_disposable": false,
"has_mx_records": true,
"is_role_address": false,
"is_free_provider": false
}Schema · Response
{
"email": {
"type": "string"
},
"valid": {
"type": "boolean"
},
"domain": {
"type": "string",
"description": "Domain part of the email address"
},
"is_disposable": {
"type": "boolean"
},
"has_mx_records": {
"type": "boolean"
},
"is_role_address": {
"type": "boolean"
}
}Tags
x402
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