Corrects, validates and verifies an email address via a full suite of tests and real-time SMTP checks. Since this operation performs real-time verification via SMTP communication the response time is dependent on the network speed of an email’s host and may take several seconds. The average response time for this operation is approximately 2 seconds, but the operation can take as long as 10 seconds.
|LicenseKey||String||Your license key to use the service.|
Sign up for a free trial key at
|EmailAddress||String||The email address you wish to validate.|
|An estimate on the validity of the email address. |
0 = Email is Good
1 = Email is Probably Good
2 = Unknown
3 = Email is Probably Bad
4 = Email is Bad
|Indicates if the mail server will accept mail for the given email address.|
|EmailAddressIn||String||Varies||Echo of input: EmailAddress|
|EmailAddressOut||String||Varies||The cleaned and corrected email. This is the email that is validated.|
|EmailCorrected||Boolean||T/F||Indicates if any corrections or modifications were made to the email address.|
|Box||String||Varies||The part to the left of the ‘@’ symbol. Also known as the local part or the username.|
|Domain||String||Varies||The part to the right of the ‘@’ symbol. The location to which the email address will be sent.|
|TopLevelDomain||String||Varies||The part after the rightmost ‘.’|
|TopLevelDomainDescription||String||Varies||Description of the Top Level Domain.|
|Indicates if the email’s mail server is operational.|
|Indicates if the mail server will accept mail to any box in that domain (*@domain).|
|Indicates if the mail server will accept mail to the specific box.|
|WarningCodes||String||0-21||Indicates if one or more potential problems were found when correcting, validating and/or verifying the email address. Returns zero or more numerical warning codes in a comma-separated list.|
|WarningDescriptions||String||Varies||Contains the warning flag(s) that corresponds to the Warning Codes. Returns zero or more warning flags in a comma-separated list.|
|NotesCodes||String||0-6||Displays additional notes about the email that were found during the validation process. Returns zero or more numerical note codes in a comma-separated list.|
|NotesDescription||String||Varies||Contains the note flag(s) that corresponds to the Notes Codes. Returns zero or more notes flags in a comma-separated list.|
|Error||Error||Varies||Error object indicating why the service could not return a result.|
-  This value is dependent on the amount data that is available for the address. The service then analyzes the data to estimate the integrity of the address.
-  An unknown return value indicates that either there was not enough information available about the recipient’s mail server to determine deliverability or the server is a catch-all. In general, catch-all mail servers will always initially accept an email message, even if the email address does not exist.
-  New codes and descriptions will be added as new features become available and the number of codes will increase in time. See the table for our current list of codes & descriptions.
- ^ What’s in a Number? What Email Validation Scores Mean