Once you have added a shared mailbox in your Outlook you can easily send and manage emails from that shared mailbox as well as from your own.
Send an Email From a Shared Mailbox
In the Outlook Desktop App
- Click From in your open email.
- Select the shared mailbox.
- Click Send.
In the Outlook Web App
- From the open email, click Options on the menu and check Show From to display the From field.
- Click From in your open email.
- Select the shared mailbox.
- Click Send.