Most configurable emails in BroadFast for WordPress allow using the {{url}} variable. It gets contextually replaced by URL toi subscribe, unsubscribe etc (as appropriate).

Please note that the variable will not automatically be replaced with a HTML hyperlink. It will be replaced with URL only. If you want to explicitly make it clickable HTML hyperlink you can do this with the rich text editor or if you prefer the Text mode, just write:

<a href="{{url}}">{{url}}</a>

The idea is to let you use free text, for example:

<a href="{{url}}">Click here!</a>

Of course if you are sending plain text emails it’s best to leave it as URL only. Most modern email programs will make it clickable anyway.