Who This Applies To
This guide is for small-business employees who have been granted permission to access a delegated or shared mailbox and want to view it inside the Microsoft Outlook Mobile app on their phone. Before you begin, make sure you are already signed into your primary work or school account in the Outlook app, as that account must have the necessary permissions to access the shared mailbox.
Steps to Add a Delegated or Shared Mailbox
- Open the Outlook app on your phone.
- Tap your profile picture or initials in the top-left corner to open the sidebar menu.
- Tap the Add Account button, which looks like an envelope with a plus sign (+).
- Select Add Shared Mailbox from the menu that appears.
- If prompted, choose the primary account that has been granted permissions to the delegated mailbox.
- Type the email address of the delegated or shared mailbox and complete the setup.
Need Help?
If you run into any issues adding the mailbox or do not see the option in your app, contact your IT support team. ACS clients can reach us at acsapp.com/contact-us.
Common questions
Why do I need to be signed into my primary account before adding a shared mailbox?
Your primary work or school account is the one that has been granted permission to access the shared mailbox. Outlook Mobile uses that account’s credentials to authenticate access, so it must already be added to the app before you can link the shared mailbox.
What if I do not see the ‘Add Shared Mailbox’ option in the Outlook app?
Make sure you are tapping the Add Account button (the envelope icon with a plus sign) from the sidebar menu after tapping your profile picture or initials. If the option still does not appear, your app may need to be updated or your account may not yet have been granted the necessary permissions.
Can I add more than one shared mailbox to the Outlook Mobile app?
The procedure supports adding a shared mailbox by entering its email address during setup. If you need access to multiple shared mailboxes, you can repeat the same steps for each one, provided your primary account has been granted permissions to each mailbox.