2. Get the HTML (note, getting the HTML from within the editor will not work here, as that is not the final rendered HTML. Instead you have to get the final rendered HTML from a field called msdyncrm_emailbody
3. Paste that HTML back into the email editor
4. Do a Litmus preview using an Outlook client > that button no longer shows. And if you look at the msdyncrm_emailbody again you see the behaviour I noted above i.e. the html tag getting altered.
Note: this forum also doesn't allow me to post any code, even when using the 'insert code snippet' which is why I added the html above as images.