How to add another mailbox to the Outlook Web App (OWA)

Before you proceed, it’s important to make sure you have the necessary permissions to access the shared mailbox or the other user’s mailbox. Now that you’ve confirmed your permissions, follow these steps to easily add the mailbox to your Outlook Web App (OWA):

  1. Access OWA

    Sign-In to the Outlook Web App (OWA) by opening a web browser and going to https://outlook.office.com/mail/ and using your Microsoft 365 credentials.

  2. Folders > Add shared folder or mailbox.

    Locate the Folders Pane and right click on it. A menu will be displayed. Select Add shared folder or mailbox.
    OWA - Add shared folder or mailbox

  3. Enter the mailbox name or email

    A pop-up window will appear. Type in the email address or name of the shared mailbox (or user mailbox) you want to add and select it.
    OWA - Add shared folder or mailbox input

  4. Finalize Addition

    Click Add to complete the process.
    OWA - Add shared folder or mailbox input selection

  5. Locate the added mailbox

    The shared mailbox will now be displayed in your OWA folder list. To locate it, scroll down the folder list in the left navigation and > Mailbox Name to expand the added mailbox and see its folders.
    OWA - Shared mailbox in pane

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