Remove Duplicate Emails
You can control how Postbox handles duplicate e-mails that arrive in the Inbox.
Type "mail.server.default.dup_action" into the "Filter:" textbox and double click on the that row to change the value to one of the following:
- 0 - the default value which is to leave the duplicate e-mails alone
- 1 - delete the duplicate e-mails when they are received
- 2 - mark the duplicate e-mails as read when they are received