How to Delete IMAP Messages in Outlook

When using IMAP to connect to your Exchange mailbox, you cannot permanently delete messages with the Delete command. They will still display as strikethrough text. The messages remain on the server until they are purged.


  1. To permanently purge your deleted messages, click Edit, then Purge Deleted Messages.

  2. You may also want to add Purge Deleted Messages to your Outlook toolbar:


  • Click View, Toolbars, then Customize.

  • Select Commands and then Edit Category.

  • Scroll down and click Purge Deleted Messages.

  • Drag the Purge Deleted Messages button to the toolbar.