Verify 550’s validation first scans to identify disposable, spam-trap, complaint (protestors), botclicker, litigator, spamcop and domain blacklist emails and then runs the email identification process for verification.
After your file has been validated and verified, each email address in the list will be labeled with one of the following statuses:
| Color Code | Status | Description |
|---|---|---|
| good | ok | All is OK. The server is saying that it is ready to receive a letter to this address and no tricks have been detected |
| caution | ok_for_all | The email server is saying that it forwards this email to a catch all |
| caution | threat_string | Curse words, code, bot and seed strings inside emails |
| caution | accept_all | The server is set to accept all emails at a specific domain. These domains accept any email you send to them |
| caution | seed | Artificial email addresses which an email marketer owns |
| caution | threat_domains | Domains of spam fighters and known complainers |
| caution | department | Email belonging to a group of people or a role |
| caution | sleeper_cell | Emails hosted on a spam fighter server |
| caution | threat_endings | Government and University mail exchanges |
| do not mail | syntax_error | There is a syntax error in the email address |
| do not mail | dead_server | The email server is dead, and no connection to it could be established |
| do not mail | unknown | The email delivery failed, but no reason was given |
| do not mail | disposable | The email is a temporary address to receive letters and expires after certain time period |
| do not mail | spam_traps | The email address is maintained by an ISP or a third party, which neither clicks nor opens emails |
| do not mail | hard_bounces | Static list of verified hard bounces – 1 billion |
| do not mail | litigator | Litigators and lawyers whom sue email marketers (traps) |
| do not mail | lash | Lashback compliance traps |
| do not mail | proof | Proofpoint spamtrap |
| do not mail | mx | Mail exchange is not setup correctly |
| do not mail | protestors | Complainers, screamers and grumblers |
| do not mail | spamcop_traps | Spamcop traps |
| do not mail | spamtrap | Confirmed spam fighter trap |
| do not mail | syntax_error | Leading, trailing spaces, unicode, latin and other characters |
| do not mail | smtp_error | The SMTP answer from the server is invalid or the destination server reported an internal error to us |
| do not mail | smtp_protocol | The destination server allowed us to connect but the SMTP session was closed before the email was verified |
| do not mail | unknown_email | The server said that the delivery failed and that the email address couln't be verified |
| do not mail | email_disabled | The email account is suspended, disabled, or limited and cannot receive emails |
| do not mail | invalid vendor response | The response from the email verification service provider (the “vendor”) is unexpected, malformed, or does not conform to the standard expected by the user or system requesting the verification. |