And it was still better than the dumpster fire that was Skype for Business. I loved how it would push a message to the device that it thought you were active on, but that there wasn't a centralized storage of messages. Messages sent to Device 1 didn't exist on Device 2.

That was so bad... you'd reply to a message at lunch on your way back, get to your desktop, and couldn't get messages at all... even if you sent one out.

That was the absolute most frustrating thing.