It is clickable, no underline, and a red color:

I've been doing a lot of sig creating/testing in the last few days so I'll see if some of my tricks will help you. First of all, complex (sometimes even not-so-complex) HTML or CSS codes will not work in email clients. It is not a website, and this is its way of telling you that. In fact, I'd go so far as to say that you should avoid HTML5 and CSS3 coding unless they existed in previous versions. Here is a good source to research accepted style elements. https://www.campaignmonitor.com/css/ Second, inline styling is a must which you probably know, but that doesn't mean that other email clients won't strip it away. You will have to do testing. And if your testing shows a particular client "converting" your link, you will have to adjust your style - possibly even duplicate it in several areas. My testing has shown G-Mail to be the most annoying when it comes to the dreaded blue-link-conversion. Here is an example of a link that currently appears and functions properly in G-Mail, Outlook and Thunderbird. It is clickable, no underline, and a red color: {font}{a href="http://www.mywebsite.ca" style="color:#cc0000; font-size:11pt; font-weight:normal; text-decoration:none;"} http://www.mywebsite.ca {/font}{/a} This is a direct paste from a code I use, so try to keep key elements in the same order while you modify the info. I hope this helps. If not, perhaps be more specific about what you are trying achieve and what you have tried. *Edit* When I posted, I noticed some tags disappeared. So I have substituted { } for the < >