No idea if this information is commonly known, but I couldn't find anything when I quickly looked so I figured I'd share my findings.
Anytime I used the satisfaction placeholder {{satisfaction.survey_section}}, I never liked how it displayed:
The section is displayed in the center, but the questions in the section are to the left, also I feel that positive should be the fist option and negative the second (and don't get me started on the fact that a neutral vote is classified as a negative… hence me only using 2 options). So, I played around to see if I can make it a little prettier, and open up the opportunity to customize how it's displayed in emails. I checked the url for the survey, the url for a positive vote, and the url for a negative vote, and noticed the only difference being the end bit having a “&rating=_” part. I did a test that turned out to be successful.
I replaced the survey section placeholder with the following:
<strong>How satisfied were you with the support you received?</strong>
<a href="{{satisfaction.survey_url}}&rating=2">😊 Satisfied</a>
<a href="{{satisfaction.survey_url}}&rating=1">😞 Unsatisfied</a>looking like this in the editor:
And now the survey section looks like this:
Obviously this is just a basic example, and you can fluff it up as much as you'd like, but you can vote in a much more aesthetically pleasing way with this approach. Your imagination is the only limitation. Function remains the exact same.