Put Snooze Icon on Main Toolbar (and clean up the icons)
When viewing an email right now and you want to snooze an email you have to click the "…" icon, then choose snooze. Can you please put a snooze icon right on the toolbar, so it can be a one click option?
The best solution would be to give users the ability to choose what items go on the toolbar.
A simple clock icon would do, but I'd also like to see the icons get cleaned up. They aren't very good looking on my retina Mac.
I loved how MailBox did it. See the attached image. Simple and clean!

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2Dutch commented
I totally agree. I've been testing several mail apps because Airmail lacked the snooze option, and now that they have it, this extremely weird implementation was chosen..very annoying. Hopefully they'll fix this soon: if Polymail and Airmail would merge, it would be the perfect app ;)