Outlook 365 for Android Adding a 365 mailbox to your phone Android (Outlook)     To add a 365 account to Outlook, first open Outlook then open the  Menu   >  Settings   >  Add Account  >  Add Email Account . Enter your full email address, then tap  Continue .     Enter your email account password and tap  Sign In  or  Next .   That should be it! Your email should be added and working.