FFraud · Schema
EmailResponse
Fraud PreventionIP LookupEmail VerificationDevice FingerprintingOpen Data
Properties
| Name | Type | Description |
|---|---|---|
| request_id | string | The id of this request. Quote it to support to have the check traced. Every address of a batch shares one. |
| string | The address as sent, with outer spaces removed. | |
| normalized_email | stringnull | The address as one mailbox: lowercased, the +tag removed, googlemail.com read as gmail.com and the dots removed on gmail.com. Null when the address is invalid. |
| domain | string | |
| did_you_mean | stringnull | The corrected address when the domain is one keystroke from a big provider (john@gmial.com gives john@gmail.com). Changes no other field. |
| is_disposable | boolean | True for temporary and alias addresses alike; email_type tells them apart. |
| detection_source | string | The check that decided the answer. no_mx: the domain does not exist or accepts no mail, so the address is invalid. |
| safe_domain | boolean | A major mail provider on the allow list; never disposable. |
| valid_format | boolean | |
| is_role_address | boolean | e.g. admin@, support@, info@ |
| is_forwarder | boolean | Mail for the domain is passed on to a mailbox somewhere else. |
| is_alias_service | boolean | The forwarding service gives one person unlimited addresses. The yes or no for an alias. |
| forwarder_service | string | The name of the forwarding service, when it can be named. |
| mx_found | booleannull | The domain publishes mail servers (MX records). Null when the lookup did not finish. |
| mx_records | array | The mail servers, best first. |
| is_known_spammer | boolean | This exact address was reported for spam or abuse. |
| reason | string | One sentence a person can read, explaining the answer. |
| email_type | string | temp (throwaway inbox), alias (forwarding address, unlimited per person), normal or invalid. |
| blocked | boolean | Keyed calls only: whether the account refuses this address, from its own allow and block lists first, then its dashboard switches. An invalid address is always blocked. |
| allowlisted | boolean | Keyed calls only: the domain, or one above it, is on the account's allow list. |
| blocklisted | boolean | Keyed calls only: the domain, or one above it, is on the account's block list. |
| community_blacklisted | boolean | |
| blacklist_reports | integer | |
| blacklist_reasons | array |
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://artifacts.apis.io/ffraud-com/json-schema/ffraud-com-email-response-schema.json",
"title": "EmailResponse",
"x-generated": "2026-11-09",
"x-method": "derived",
"x-generator": "derive-json-schema.py",
"x-source": "openapi/ffraud-com-openapi.json#/components/schemas/EmailResponse",
"type": "object",
"required": [
"request_id",
"email",
"normalized_email",
"domain",
"did_you_mean",
"is_disposable",
"detection_source",
"safe_domain",
"valid_format",
"is_role_address",
"is_forwarder",
"is_alias_service",
"mx_found",
"mx_records",
"email_type"
],
"properties": {
"request_id": {
"type": "string",
"description": "The id of this request. Quote it to support to have the check traced. Every address of a batch shares one."
},
"email": {
"type": "string",
"description": "The address as sent, with outer spaces removed."
},
"normalized_email": {
"type": [
"string",
"null"
],
"description": "The address as one mailbox: lowercased, the +tag removed, googlemail.com read as gmail.com and the dots removed on gmail.com. Null when the address is invalid."
},
"domain": {
"type": "string"
},
"did_you_mean": {
"type": [
"string",
"null"
],
"description": "The corrected address when the domain is one keystroke from a big provider (john@gmial.com gives john@gmail.com). Changes no other field."
},
"is_disposable": {
"type": "boolean",
"description": "True for temporary and alias addresses alike; email_type tells them apart."
},
"detection_source": {
"type": "string",
"enum": [
"none",
"safe_domain",
"alias_provider",
"alias_provider_mx",
"database",
"pattern",
"mx_host",
"mx_ip",
"provider_live",
"business_mx",
"cleared",
"known_spammer",
"no_mx",
"reserved",
"invalid"
],
"description": "The check that decided the answer. no_mx: the domain does not exist or accepts no mail, so the address is invalid."
},
"safe_domain": {
"type": "boolean",
"description": "A major mail provider on the allow list; never disposable."
},
"valid_format": {
"type": "boolean"
},
"is_role_address": {
"type": "boolean",
"description": "e.g. admin@, support@, info@"
},
"is_forwarder": {
"type": "boolean",
"description": "Mail for the domain is passed on to a mailbox somewhere else."
},
"is_alias_service": {
"type": "boolean",
"description": "The forwarding service gives one person unlimited addresses. The yes or no for an alias."
},
"forwarder_service": {
"type": "string",
"description": "The name of the forwarding service, when it can be named."
},
"mx_found": {
"type": [
"boolean",
"null"
],
"description": "The domain publishes mail servers (MX records). Null when the lookup did not finish."
},
"mx_records": {
"type": "array",
"maxItems": 4,
"items": {
"type": "string"
},
"description": "The mail servers, best first."
},
"is_known_spammer": {
"type": "boolean",
"description": "This exact address was reported for spam or abuse."
},
"reason": {
"type": "string",
"description": "One sentence a person can read, explaining the answer."
},
"email_type": {
"type": "string",
"enum": [
"temp",
"alias",
"normal",
"invalid"
],
"description": "temp (throwaway inbox), alias (forwarding address, unlimited per person), normal or invalid."
},
"blocked": {
"type": "boolean",
"description": "Keyed calls only: whether the account refuses this address, from its own allow and block lists first, then its dashboard switches. An invalid address is always blocked."
},
"allowlisted": {
"type": "boolean",
"description": "Keyed calls only: the domain, or one above it, is on the account's allow list."
},
"blocklisted": {
"type": "boolean",
"description": "Keyed calls only: the domain, or one above it, is on the account's block list."
},
"community_blacklisted": {
"type": "boolean"
},
"blacklist_reports": {
"type": "integer"
},
"blacklist_reasons": {
"type": "array",
"items": {
"type": "string"
}
}
}
}
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