- Click “New Email”.
- If the From field is not yet visible, on the “Options” tab, in the “Show Fields” group, click “From” to display From field for this and all future emails.
- Click “From” field and then select “Other E-mail Address…”.
- Type the name or email address of the shared mailbox, and then click “OK”.
- The shared mailbox address is displayed. In the future, you can click “From” button and select it to send email from this shared mailbox.