Fast Bounce Handling

This option sets whether bounces are handed in memory, which may be faster, or if they are saved in the incoming mail database, and processed there.

When a message mailing is sent out to its recipients, some of the recipients will bounce back a message saying they could not receive the message. ListManager automatically tracks these messages, and determines when an email address has become invalid.

ListManager can keep track of these bounces in memory, as they occur. The downside to this approach is that the bounces will not appear in the "incoming mail" web page of the web interface. On the other hand, this is a faster and more space efficient way to process these messages.

However, if you want to be able to view the bounces that ListManager received by looking at the "incoming mail" web page of the web interface, you should disable this feature.