Add an Email Signature in Outlook.
To add an email signature in Outlook, first, open the Outlook app. Then click File > Options > Mail. In the Mail Settings window, select the Signatures tab. Click the New button and type a name for your signature in the window that appears. Next, select the text in the Edit Signature box and type your desired signature. When you are finished, click OK. Your signature will now appear at the bottom of all emails you send from Outlook.