Some notification icons I made a few years ago for IceWarp. Yes, I know, it's old stuff. But that's because I am preparing things for my homepage and this screenshot had to link somewhere :)
Since circa 2000 IceWarp Technology produces an e-mail server, strongly inspired by Microsoft Outlook. I was hired to redesign the UI while not touching the UX. That's a very tough task for the next iteration soon to follow.