Updating Hostname in Android Phone Mail

On the Android phone:

• In your mail app, tap the hamburger menu (three horizontal lines) on the left side.

• Then tap the settings cogwheel at the top here.

• Select the email account you wish to change.

• Then, scroll to the bottom and tap Server settings.

• Here is where you can update incoming/outgoing server names.
  No other settings need changing:
  1- Under incoming Server: IMAP or POP server: Delete the old server name and type the new one.
  2- Under Outgoing: SMTP server: Delete the old server name and type the new one.

• Click Done when finished!