Truelist verification results

Truelist provides comprehensive email verification results through two main attributes: email state and email sub-state. These attributes help you understand the deliverability and quality of the email addresses in your list.

Email State

The email state gives a high-level status of the email address’s deliverability. Here are the possible values:

ok: The email address is deliverable and appears to be valid.
risky: The email address has some issues that might affect deliverability.
invalid: The email address is undeliverable and should be removed from your list.
Unknown: Truelist could not determine the email address’s status. This is usually due to a timeout or other connection issue when communicating with the email server for the address. Truelist will retry multiple times before returning an unknown result.

Email Sub-State

The email sub-state provides a more detailed result code, offering a finer granularity of the email address status. Here are the possible values:

Ok: The email address is valid and deliverable.
Accept all: The domain accepts all emails, making it impossible to verify individual addresses.
Disposable address: The email address is a temporary, disposable address.
Role address: The email address is a role-based address (e.g., info@, sales@).
Failed mx check: The email address failed the mail exchange server check.
Failed spam trap: The email address is identified as a spam trap.
Failed no mailbox: The email address does not have a valid mailbox.
Failed greylisted: The email address is temporarily rejected by the server (greylisting).
Failed syntax check: The email address failed the syntax validation.
Unknown: Truelist could not determine the email address’s status.

Understanding the Results

When you perform an email verification using Truelist, you will receive both the email state and email sub-state for each email address. Here’s how to interpret these results:

Safe addresses

Ok: The email address is deliverable and safe to use.

Risky addresses

accept all: The domain accepts all emails, so individual address validity cannot be confirmed. Use caution.
disposable address: The email is a temporary address and might not be reliable for long-term communication.
role address: The email is a role-based address, which might not be monitored by a specific individual.

Invalid addresses

Failed mx check: The email address has no valid mail exchange servers.
Failed spam trap: The email address is flagged as a spam trap and should be avoided.
Failed no mailbox: The email address does not exist.
Failed greylisted: The email was temporarily rejected (greylisted), and reattempting later might succeed.
Failed syntax check: The email address has an invalid format and fails syntax validation.

Unknown results

Unknown: The system could not determine the status of the email address. This usually means we cannot communicate with the email server, or a connection timed out. Note that we do retry failed connections multiple times before returning an unknown result.

By leveraging Truelist’s detailed verification results, you can ensure your email campaigns are more effective and maintain a high deliverability rate.