I'd love to see a checkbox for email notifications only on repositories I have commit access on... As it is, I'm watching quite a few, and while I like to check them all via the website every couple days, I'm pretty much stuck ignoring the emails, as there are way too many of them to filter the noise out.
You could create a filter in your email program.
And I'd have to update that filter every time I create a repo on github (which I do more often than I'd ever remember to update email filters).. though tbh it's gulp-header that I don't regularly use anymore that's probably the most popular codebase I control.
Feels like GitHub is one of the very few websites that do email Right.
Awesome. No longer do I have to remember to respond on Issues by replying to notification emails.