Email Checker API

Indicates the processing status of the validation request.
true: Validation process completed successfully, regardless of whether validEmail is invalid or risky.
false: Validation could not be completed due to inconclusive results or blocked validation path (typically occurs when validEmail returns unknown).

The email address submitted for validation.

Optional identifier or label provided in the request for record tracking purposes.

Comprehensive deliverability assessment derived from SMTP protocol validation, DNS record verification, and email provider-specific fallback mechanisms.

Possible values:
• valid - Email address verified and recipient confirmed to exist
• invalid - Email address rejected by recipient server or domain is undeliverable
• unknown - Validation inconclusive due to server non-response, temporary blocks, or probe restrictions (results in success: false)
• risky - Deliverability uncertain due to greylisting, mailbox capacity issues, or other temporary conditions

Detailed explanation returned when validEmail is not valid.

Validates email address format compliance with RFC 5322 standards.
When false, the validEmail field will always return invalid.

Domain-level analysis containing validation status, disposability classification, spam reputation, and catch-all configuration detection.

Mailbox-level analysis containing role-based address detection and storage capacity status indicators.

DNS record collection containing MX and A records retrieved during validation process.

IP address provided for geolocation and security enrichment.
This field is not required for core email validation functionality.

Geographic location data derived from IP address geolocation services.
Included only when ipAddress is provided and successfully resolved by geolocation provider.

Security threat intelligence containing proxy detection, bot identification, threat scoring, and anonymization analysis.
Included only when ipAddress is provided and successfully resolved.

Validation status indicating whether the IP address was successfully recognized and resolved by the geolocation service provider.

Extracted domain component from the email address.

Domain validation status confirming DNS resolution capability and mail delivery infrastructure availability.
Verification includes presence and usability of MX (Mail Exchange) records.

Classification flag identifying domains registered with known temporary or disposable email service providers.

Reputation indicator flagging domains that appear on spam databases or suspicious activity monitoring lists.

Classification indicating free or consumer-grade email service providers.

Detection flag for domains configured to accept mail for any recipient address (catch-all MX configuration).
Reduces recipient-level validation accuracy and increases deliverability uncertainty.

Pattern detection flag identifying role-based or functional email addresses.
e.g. admin@, support@, sales@, info@, contact@

Storage capacity status indicator for the recipient mailbox.
Returned only when mailbox status can be determined through SMTP response codes. Omitted when status is indeterminable.

Collection of MX (Mail Exchange) hostname records retrieved from DNS queries and utilized during SMTP validation handshake process.

Collection of A (Address) records for the domain.
Contains IPv4 addresses resolved from DNS queries for the target domain.

Municipal or city name derived from IP geolocation database.

District, neighborhood, or sub-municipal administrative division.
Included when provider database contains granular location data.

Postal code or ZIP code designation for the location.

State, province, or first-level administrative division designation.

Common country name in English.

Official country name as recognized by international naming conventions.

Two-character country identifier.
Standard: ISO 3166-1 alpha-2

Three-character country identifier.
Standard: ISO 3166-1 alpha-3

Continental region name.

Continental region identifier.
Standard: ISO 3166-1 continent codes

Geolocation precision radius provided by the service provider.
Typically expressed in kilometers or miles depending on provider configuration.

Confidence score or reliability metric for the geolocation accuracy, as determined by the provider algorithm.

European Union membership status indicator for the identified country.

Quantitative risk assessment score calculated from threat intelligence data sources.
Higher values indicate elevated security risk and potentially malicious activity patterns.

Detection flag for IP addresses routed through the Tor (The Onion Router) anonymity network.

Detection flag identifying IP addresses operating as proxy servers or intermediary connection points.

Classification of detected proxy infrastructure type.
e.g. VPN, HTTP, SOCKS, Web Proxy, Public Proxy

Identified service provider operating the proxy infrastructure.
Typically populated for commercial VPN services and known proxy providers.

Anonymization detection flag identifying IP addresses employing identity obfuscation techniques or privacy-enhancing technologies.

Threat intelligence flag identifying IP addresses documented in attack databases as confirmed sources of malicious network activity.

Reputation flag identifying IP addresses associated with spam transmission or listed in anti-spam blacklist databases.

Automated traffic detection flag identifying IP addresses originating from bot networks, scripts, or non-human traffic sources.

Infrastructure classification flag identifying IP addresses allocated to cloud computing or hosting service providers.

Identified cloud infrastructure or hosting service provider name.