Each email processed by the Intelligent Verification API receives a primary result code. Here's what each code means:
| Result | Description |
| DUPLICATE | Duplicate email detected |
| RISKY | Email is Risky |
| ACCEPT_ALL | Email is accept-all |
| ACCEPT_ALL/KNOWN_USER | Reliable determination the email address has an Office 365 account |
| ACCEPT_ALL/UNKNOWN_USER | Reliable determination the email address does not have an Office 365 account |
| UNKNOWN | Unable to determine results |
| INVALID | Email is invalid |
| VALID | Email is valid |
Result detail codes provide more in-depth insight into the nature of the email's status:
| Result Detail |
Description |
| ANY_EMAIL_ACCEPTED | Email server is accepting any emails for the domain |
| B2C | Email address is B2C. Email addres is from a "free" provider such as hotmail, yahoo, gmail |
| BAD | Email address is bad |
| COMMON_TYPO | Email address contains a typo |
| DISPOSABLE | Email addres is diposable. Typycally quick-turnaround addresses that are disposed of quickly |
| DNS_FAILURE | Email domain of DNS results in a failure |
Continuing with more result detail codes:
| Result Detail | Description |
| DOMAIN_SUSPENDED | Email domain is suspended |
| DUPLICATE | Email address is duplicate |
| EXCLUDE | Email address is excluded |
| GREYLISTING | Email address is greylisted |
| INVALID_CONVERSATION | Target mail server returned an invalid conversation |
| INVALID_FORMAT | Email address format is invalid |
| KNOWN_ACCEPT_ALL | Email address is a known accept all |
| KNOWN_NOT_ACCEPT_ALL | Email address is a known not accept all |
| MAILBOX_FULL | Email address mailbox is full. Destination Inbox was full and therefore rejecting messages |
| OK | Email address is valid. Deliverable email address |
| ROLE_ACCOUNT | Email address is a role account, for example info@, webmaster@, postmaster@, |
| SERVER_CONFIG_ERROR | Target mail server has configuration issues |
| SPAM_TRAP | Email address is known or suspected spam trap |
| TIMES_OUT | Email address processing timed out. May need reprocessing |
| UNABLE_TO_CONNECT | We were unable to connect to the target mail server |
| UNKNOWN | Unable to distinguish specific results |
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