Reviewed on 20 January 2025 • Published on 20 January 2025
The Transactional Email blocklist feature allows your to manage email addresses that generate errors, or “bounces”. Emails are automatically blocked when a mailbox does not exist, or is full, to prevent sending emails to a recipient address that is not reachable.
Owner status or IAM permissions allowing you to perform actions in the intended Organization. For blocklists your can apply the TransactionalEmailBlocklistFullAccess permission
If any of your emails bounced, you will see a temporary blocklist entry, with a duration of 48 hours, containing the details of the email that bounced and the reason, or flag. Some examples of bounce reasons are:
Mailbox not found - when mailbox does not exist
Mailbox full - when the mailbox is full.
The temporary blocklist entry is created automatically to prevent repeated attempts to send emails, which could damage your reputation.
To see the blocklist:
Click Transactional Email in the Managed Services section of the console side menu. Your domains display.
Click the domain whose blocklist you want to manage. An overview of your domain appears.
Click the Blocklist tab. Your blocklist displays, detailing the recipient email, the flags, the date the block began, and when it ends.
You can unblock any address that was added to the blocklist. This is useful in cases where:
A temporary error has been corrected. The recipient has freed up space in their mailbox, for example.
An address becomes valid again after an update.
Note
You can unblock up to five addresses every 24 hours.
Click Transactional Email in the Managed Services section of the console side menu. Your domains display.
Click the domain whose blocklist you want to manage. An overview of your domain appears.
Click the Blocklist tab. Your blocklist displays.
Click Unblock next to the email address you wish to unblock. A pop-up appears to warn you to:
Important
Make sure the issue causing the email’s rejection is resolved before unblocking it to protect your reputation score and ensure optimal email deliverability.
Type UNBLOCK and click Unblock if you wish to continue.
The email address is removed from your blocklist.