To delete a some old mail or to clean up your mail box, you can follow the easy steps below:

  • Go to your mailbox! 
  • Open the specific mail!
  • Click on the gear on the top right hand of that mail.
  • Select (Delete History)

You must take into consideration when you delete the history that specific mailbox between you and the other user will be deleted and no way to restore it. Of course you can still send and receive new messages from each other, but all the past messages will be gone.