Outlook 2016 on Windows - Adding an Additional Mailbox (Alternate Method)

Note: This method is not recommended for all users, and may produce unexpected results when using shared department mailboxes. Unless directed specifically to this article, consider using this article instead.


How do I add an additional Exchange Mailbox in Outlook 2016?


You may have multiple Exchange mailboxes that you use for work.

Some departments use this method because it offers different features when managing emails in a shared mailbox. When adding a mailbox as outlined below, expect to see the following differences in comparison to the normal process:

  • When sending from the shared mailbox, sent emails go to the Sent Items folder in the user's personal mailbox.
  • When deleting in the shared mailbox, deleted emails go to the Deleted Items folder in the user's personal mailbox.
  • When sending from the shared mailbox, the user's personal email signature is appended to the email message.

Relates To (Environment)

  • Oregon State
    • Employee
      • Windows
        • Outlook 2016


  1. Click File in the upper left corner of your Outlook mailbox.
  2. Click Info on the top of the sidebar that comes up.
  3. Click Account Settings and then click Account Settings... in the dropdown menu that appears.
  4. Double-click on your mailbox in the list to open mailbox settings.
  5. Click More Settings in the bottom right corner of the window that pops up.
  6. Go to the Advanced tab, and click Add
  7. Enter the email address for the mailbox you want to add, and click OK.
  8. Click OKNext, and Finish until you get back to the main Outlook window. You may be prompted to restart Outlook before the changes take effect.

For assistance, contact the IS Service Desk.


Article ID: 55638
Tue 6/12/18 12:00 PM
Sun 4/17/22 10:34 AM

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This article will walk you through the steps of adding an additional mailbox in Outlook 365 for Windows.