You can manage the size of your mailbox to improve the overall performance of Microsoft Outlook.

1. Click the File tab
2. Click Cleanup Tools
3. Click Mailbox Cleanup
4. Do any of the following:
   • View the total size of your mailbox and of individual folders within it.
   • Find items older than a certain date.
   • Find items that are larger than a certain KB size.
   • Archive items using AutoArchive.
   • View the size of your Deleted Items folder.
   • Empty your Deleted Items folder.
   • View the size of your Conflicts folder.
   • Delete your Conflicts folder.