When a coworker comments on a PR, I'm sent an email with the comment, the file the comment was in and the line the comment was on. That data is useful, but I find I almost always click the "View comment" button to give the comment more context. The context given on the web is great (the overview page does a perfect job of showing both the comment and surrounding code), but I'd prefer to have this context in my notification emails.

Providing context via a code snippet allows me to quickly scan and find the code in question. Having a code snippet to reference is especially useful when I'm modifying a branch while a coworker is giving me feedback, since the line number often doesn't match up with what I have locally after minor edits.