Changes to Hard Bouceback Management

To aid your deliverability we have amended the number of  campaigns an email address can be sent to where we record a hard bounce before it is removed from your mailing lists. You can now can now pick a hard bouceback threshold of between 1 and 3, and the option to never delete has now been removed. The way soft bouncebacks are treated remains unchanged.

The reason for this change is that ISPs sometimes penalise email senders if the messages they are sending result in a large number of "bounces." Be sure to review your lists on a regular basis and remove from your lists any email addresses that hard bounce or that continue to soft bounce.

A hard bounceback is an email address that is undeliverable because of permanent failure, such as "This account does not exist." A soft bounceback is an email address that is undeliverable because of temporary failure, such as "Mailbox full."

Reducing the number of hard bouncebacks will help aid deliverability and increase the chance of mail hitting the inbox for addresses which do exist. The system automatically handles bounceback processing for you, to ensure that the lists you are using to send messages are as clean as possible.

Previously when an address reached its hard bounceback threshold, dotMailer would remove it from all of your address books. dotMailer will now also add the addresses that hard bounce to your Suppression List. This prevents any addresses known to hard bounce from being uploaded into your Address Books in the future.

We have amended the Suppression List so that you can view the addresses that have been removed as a result of hitting the hard bounceback threshold. When viewing your Suppression List, you can now toggle the list between addresses that have hard bounced and those who have elected to unsubscribe. You can also filter the list by a date range to help you export the data that you require.