Articles in this category Create a Signature Open a new email message. On the Message menu, select Signature > Signatures.Depending on the size of your Outlook window and whether you're composing a new email message or a reply or forward,... Add a Shared Mailbox on Outlook (Mobile) If you use Outlook for iOS or Outlook for Android, you can add a shared mailbox if you have permissions to access the mailbox on Outlook Mobile. Notes: Outlook for iOS and Android supports shared ...