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.
Send automatic replies from a shared mailbox
Only your Office 365 admin has permissions to set this up.
For any further queries, you can reach us by creating a new ticket at Foetron Support Portal or you can directly call us on our support helpline number +91-124-4506200