What do I do if I exceed my mailbox size?

There are various ways to maximize your available mailbox space:

  • delete old messages
  • regularly empty the Deleted Items folder (Outlook 2010-2013 has an option to empty Deleted Items every time Outlook is closed)
  • look for messages with large attachments and move┬áthose file attachments to a different storage space, such as OneDrive, then don’t forget to delete the attachment from the message or delete the message and attachment
  • clean out the Sent Items folder
  • create personal folders on your network drive and store email there instead of your inbox