Office 365 – Shared Mailbox on Mobile

Last updated on March 26th, 2018 at 09:49 am

Site or shared mailboxes don’t have their own logon but they can be opened (as the only account) in an Outlook profile using the credentials of anyone who has Full Access permission. Unfortunately, when you use your credentials to set up an Exchange account on a smartphone, it opens your mailbox, not the shared mailbox.

Open a calendar that belongs to a shared mailbox on a smartphone or tablet: How to View a Shared Calendar on a Smartphone

However, you can open the shared mailbox using POP3 or IMAP (if those services are enabled for the shared mailbox) using [email protected]\sharedmailboxalias format for the login.The shared mailbox cannot be hidden from the address list when you are setting up the account. It needs to be visible for this method to work. After the account is configured, the address can be hidden.

Some servers may require domain\useralias\sharedmailboxalias format.

For example, this configuration works on an iPad/iPhone (and also on Android and Windows Phone) to connect to an Office 365 shared mailbox. This will work with on-prem Exchange provided POP3 or IMAP support is enabled on the shared mail.

The IMAP and SMTP server names for Office 365 accounts are in OWA Options. Apple devices should get the correct Port and Encryption settings from autodiscover records.

Server name:
Port: 993
Encryption method: SSL

Server name:
Port: 587
Encryption method: TLS

Apple Devices

Enter the Shared mailbox display name and email address and something in the password field on the New Account screen and click Next.

Enter the incoming and outgoing server names, the username in [email protected]\sharedmailboxalias format and your password then click Next. The mailbox is now ready to use.

Android Devices

Screenshots from an Android tablet, showing the server settings for Office365 shared mailboxes are below.

Enter the server name and port settings, the username in [email protected]\sharedmailboxalias format and your password. Click Next.Enter the shared mailbox’s display name and SMTP address on the first screen. Type something in the password field. Click Next.

Enter the outgoing server name or port settings. If needed, use your username and password for Outgoing authentication.


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