Validate email addresses
Validate email addresses: RFC-style syntax checks, IDN domain normalization, live MX lookups with A/AAAA fallback (DNS-over-HTTPS), disposable-domain detection, role-address detection (info@, support@), free-provider flagging, and typo suggestions for popular providers (gmial.com -> gmail.com). Single address or batches up to 50. POST a JSON body like: {"emails":["ada@example.com","bad@mailinator.com","typo@gmial.com"]}
Answeringour last check, 2026-09-24
1 of 1checks answered this week
33 msmedian answer time
$0.003listed price per call
$0.003price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://keyronne.com/api/email-validate
| Category | Everything else |
|---|---|
| Provider host | keyronne.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.003 | 33 ms |
Example input (from the provider)
{
"body": {
"emails": [
"ada@example.com",
"bad@mailinator.com",
"typo@gmial.com"
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"properties": {
"body": {
"properties": {
"email": {
"description": "One address to validate. Provide email or emails.",
"type": "string"
},
"emails": {
"description": "Batch of addresses to validate (max 50).",
"items": {
"type": "string"
},
"maxItems": 50,
"type": "array"
},
"skipDns": {
"default": false,
"description": "Skip MX/A lookups and return syntax + heuristic checks only.",
"type": "boolean"
}
},
"type": "object"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"type": "object"
},
"output": {
"properties": {
"results": {
"items": {
"properties": {
"checks": {
"properties": {
"disposable": {
"type": "boolean"
},
"freeProvider": {
"type": "boolean"
},
"hasPlusTag": {
"type": "boolean"
},
"role": {
"type": "boolean"
}
},
"type": "object"
},
"dns": {
"properties": {
"deliverable": {
"description": "true/false, or null if DNS was unreachable."
},
"method": {
"enum": [
"MX",
"A-fallback",
"AAAA-fallback",
"unavailable"
],
"type": "string"
},
"mxRecords": {
"items": {
"type": "string"
},
"type": "array"
}
},
"type": "object"
},
"domain": {
"description": "Normalized ASCII domain.",
"type": "string"
},
"email": {
"type": "string"
},
"reason": {
"description": "Why the address is invalid, if it is.",
"type": "string"
},
"suggestion": {
"description": "Likely intended address for typos.",
"type": "string"
},
"valid": {
"type": "boolean"
}
},
"type": "object"
},
"type": "array"
}
},
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}