If you have basic HTML skills and know how to work with a web server, you will learn how to write up your HTML codes correctly by following Section 1. In this tutorial, I’ll go over some HTML tips for writing up the HTML codes and instructions on how to install the email signature into Microsoft Outlook 2016 For Mac. You have to design your signature layout, write up the HTML codes and know how to install it into Outlook. Having a HTML signature in your emails is a great way to look professional, unique and to promote yourself but creating one isn’t so straightforward.