In the Folder pane, right-click your account name, and select Add shared folder or mailbox. In the Add shared folder or mailbox window, type the name of the mailbox you want to access, for example, …

If someone in your organization is sharing a mailbox with you, you might want the ability to manage the settings (such as Categories, Notifications, Rules, and Automatic Replies) for that mailbox. You can …

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 …

You can access another person's mailbox if you have been granted the appropriate permissions to their mailbox. Permissions can range from read-only to creation, deletion, and allowing responses to …

The following table summarizes the permissions options that may be available for a shared folder or mailbox, and the best method for opening the shared folder or mailbox based on the corresponding …

Select + Add to add a shard mailbox or folder that you have access to. Any shared mailbox of folder you add will automatically show on the Mail tab in the new Outlook folder pane.

You can now add a new account. Under Email accounts, select Add Account, and select a suggested account from the dropdown menu or enter a different email address.

On the Advanced tab, under Open these additional mailboxes, select Add, and then enter the mailbox name of the person you want to add to your user profile. Select OK, then select OK again.

Fixes an issue in which a user cannot expand a folder of an on-premises mailbox that's added as an additional mailbox in Exchange Online

For example, you can share a single mailbox across several individuals where all incoming and outgoing mail are from that mailbox. Or you can share one or more folders, or your entire mailbox with others. …