Using  Grid Menu | Settings | Mange Account Settings | tap the account you want to edit |

You can edit the following details:

  • Name The name presented when sending an email from this account.
  • Username 
  • Description  How your account will be presented to you in the accounts list.
  • Signature
  • Enable Push – To enable / disable push notifications.
  • Do Not Disturb
  • Delete Account

Note: Password option (to update your password) is available for certain providers not supporting OAuth.