Add a shared mailbox as an additional account in Outlook Desktop

• Applies to:

  Outlook for Microsoft 365, Outlook LTSC 2021, Outlook 2019, Outlook 2016

You can include a shared mailbox in your Microsoft Outlook profile as an automapped mailbox, an additional mailbox, or an additional account. This article discusses how to add a shared mailbox to your profile as an additional account.

Note

The following procedure applies to either a shared or regular mailbox.

1. If the shared mailbox is already included in your profile as an automapped or additional mailbox, remove it by using the applicable procedure:

   • For an automapped mailbox, disable automapping. After automapping is disabled, you might have to wait up to one hour for Microsoft Exchange to remove the automapped mailbox from your Outlook profile.

     Note: Only an Exchange admin can disable automapping.

   • For an additional mailbox, remove the mailbox from the list of additional mailboxes in your Outlook profile.

   This step makes sure that you don't add a second instance of the same mailbox to your Outlook profile in step 2.

2. Add the Exchange account for the shared mailbox to your Outlook profile as an additional account:

   1. Open Outlook, and then select File > Add Account.

   2. Enter the email address of the mailbox, and then select Connect.

   3. When you're prompted to sign in, enter your email address instead of the email address of the shared mailbox, and then select Next.

      Note: If the sign-in prompt doesn't let you change the email address, select Sign in with another account to open a new sign-in prompt, and then enter your email address instead of the email address of the shared mailbox.

   4. After you successfully authenticate, restart Outlook.

Display event reminders for a shared mailbox

One reason that you might want to add a mailbox as an additional account is that Outlook doesn't show event reminders for a mailbox that is automapped or added as an additional mailbox. Outlook supports event reminders for a shared or regular mailbox only if you add the mailbox to your Outlook profile as an additional account.