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 mailboxes when your mailbox and shared mailbox are located in Exchange Online and using the native Microsoft sync technology.
Refer the following link for more information: Outlook for iOS and Android in Exchange Online: FAQ.
Use a shared mailbox on a mobile device (phone or tablet)
To access a shared mailbox on a mobile device, use the following steps.
Sign in to your primary account in Outlook for iOS or Android.
- Tap the Add Account button in the left navigation pane, then tap Add a Shared Mailbox.
- If you have multiple accounts in Outlook Mobile, select the account that has permissions to access the shared mailbox.
After the account setup process completes, the shared mailbox will display in your account list in Outlook for iOS or Outlook for Android.
To remove a shared mailbox, go to Settings > Accounts. Then tap on the shared mailbox and select Delete Account.