Verify email syntax and public DNS readiness with a bounded deterministic prefli
Verify email syntax and public DNS readiness with a bounded deterministic preflight. Forest checks normalized syntax, MX/address records including explicit null MX, and curated role/free/disposable-domain signals, then returns a conservative safe-to-attempt decision. It never connects to SMTP, sends mail, authenticates, stores customer mailboxes or claims that a mailbox exists. Base mainnet USDC
Not tested: has real-world effectsour last check, 2026-10-10
0 of 0checks answered this week
n/amedian answer time
$0.001listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/email/verify
| Category | Code and developer |
|---|---|
| Provider host | http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"body": {
"email": "support@example.com"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"email": {
"description": "Public email value used to scope this lookup.",
"maxLength": 320,
"type": "string"
}
},
"required": [
"email"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"capability": {
"const": "email.verify",
"description": "Public capability value used to scope this lookup."
},
"data": {
"additionalProperties": false,
"description": "Public data value used to scope this lookup.",
"properties": {
"blockers": {
"description": "Public blockers value used to scope this lookup.",
"items": {
"type": "string"
},
"type": "array"
},
"disposable_domain": {
"description": "Public disposable domain value used to scope this lookup.",
"type": [
"boolean",
"null"
]
},
"dns_resolves": {
"description": "Public dns resolves value used to scope this lookup.",
"type": "boolean"
},
"domain": {
"description": "Public normalized email value used to scope this lookup.",
"type": [
"string",
"null"
]
},
"free_provider": {
"description": "Public disposable domain value used to scope this lookup.",
"type": [
"boolean",
"null"
]
},
"mx_hosts": {
"description": "Public mx hosts value used to scope this lookup.",
"items": {
"type": "string"
},
"maxItems": 10,
"type": "array"
},
"mx_present": {
"description": "Public mx present value used to scope this lookup.",
"type": "boolean"
},
"normalized_email": {
"description": "Public normalized email value used to scope this lookup.",
"type": [
"string",
"null"
]
},
"null_mx": {
"description": "Public null mx value used to scope this lookup.",
"type": "boolean"
},
"provider_request_count": {
"description": "Public provider request count value used to scope this lookup.",
"maximum": 3,
"minimum": 0,
"type": "integer"
},
"role_address": {
"description": "Public disposable domain value used to scope this lookup.",
"type": [
"boolean",
"null"
]
},
"safe_to_attempt": {
"description": "Public safe to attempt value used to scope this lookup.",
"type": "boolean"
},
"scope": {
"const": "syntax_and_public_dns_only_no_smtp",
"description": "Public scope value used to scope this lookup."
},
"syntax_valid": {
"description": "Public syntax valid value used to scope this lookup.",
"type": "boolean"
},
"warnings": {
"description": "Public warnings value used to scope this lookup.",
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"normalized_email",
"domain",
"syntax_valid",
"dns_resolves",
"mx_present",
"null_mx",
"mx_hosts",
"disposable_domain",
"role_address",
"free_provider",
"safe_to_attempt",
"blockers",
"warnings",
"provider_request_count",
"scope"
],
"type": "object"
},
"meta": {
"additionalProperties": false,
"description": "Public meta value used to scope this lookup.",
"properties": {
"cache": {
"description": "Public cache value used to scope this lookup.",
"enum": [
"hit",
"miss",
"bypass"
]
},
"checked_at": {
"description": "Public checked at value used to scope this look