Custom Event Action "Email"

Greetings, IFS Community!

Can HTML be used inside an ACTION TYPE email? 

=> PLSQL can be used to accomplish this task. <=   However, my question is more focused on whether or not the EMAIL ACTION TYPE is capable of accomplishing this task.  

As an example, the screenshot below shows the https or URL where user will need to click:

Is it possible to replace the entire URL with the word "MRB CASE" using HTML in order to hide the entire URL using the EVENT ACTION type EMAIL? See screenshot below for more details.

Thanks