I had a request to talk about deleting emails and “emptying the trash can” (or deleting all the deleted emails). It is important to delete your “Deleted Items” folder frequently because viruses or other malware could be lurking (and when any email folder gets too large, it can start causing wonky things to happen in Outlook).
If you prefer, you can also adjust your Outlook settings so that the Deleted Items folder will delete automatically every time you exit out of Outlook (if you want to save emails in case you need them later, create a new folder and save trusted emails there). Here’s how:
With Outlook open,
Go to File –>Options –>Advanced
Then check this box, and click “OK”