1. Firstly, open a new message. On the Message tab, in the Include group, click Signature and then click Signatures.
Or, in the main Outlook screen you can also click File and then Options.
When the window opens click Mail and then Signatures.
2. After that, in the E-mail Signature tab click New. Next, type in a name for the signature and then click OK.
3. In the Edit Signature box, type the text that you want to include in this signature. You have options to format the text in different ways which you can do by highlighting the text and then choosing one of the options. Also you can add elements such as an electronic Business Card, an Image, or a Hyperlink as well.
4. Once you've created your signature you can assign that signature to any one of your outlook accounts, you also have the option to use your signature for just new messages or replies/forwards as well.