How to open another mailbox in Office 365

Did you know that you can open a delegated or shared mailbox in Office365 using a browser? It is fairly simple and should take you no time at all.

1. First, open a browser (Chrome, Firefox, Edge, or even Internet Explorer)
2. Go to https://outlook.office.com
3. Sign in with your username and password
4. Left-click on the icon (might be your initials or a picture of you set one)
5. Select “Open another mailbox”
6. Enter the mailbox you wish to open
   • If you are delegated to the mailbox it will open, if not, you will get an error.
   • If you get an error, contact your IT department for more information.
     • If you were just added to the mailbox as a delegate, it can take up to sixty (60) minutes for the permissions to take effect