A shared mailbox is a type of user mailbox that doesn't have its own username and password. As a result, users can't log into them directly. To access a shared mailbox, users must first be granted Send As or Full Access permissions to the mailbox.
How do I log into a shared mailbox?
Open a shared mailbox in a separate browser window
- Sign in to your account in Outlook Web App.
- On the Outlook Web App navigation bar, select your name. A list appears.
- Select Open another mailbox.
- Type the email address of the other mailbox that you want to open and then select Open.
How do I add a shared mailbox in Outlook without password?
In that case, you can add the mailbox to your Outlook configuration without password in the following way:
- Open the Account Properties dialog:
- Double click on your Exchange account to open its properties.
- Click on the button: More Settings…
- Select the Advanced tab.
- Click on the button: Add…
