Recently Messages stopped working on my Mac. Messages sent by my iPad and iPhone were synced to my Mac, but sending failed. After trying about twenty-eleven possible solutions from here, apple, and elsewhere on the internet, I rebooted my Mac. This doesn't happen often. The problem went away, but so did the last 2 months worth of messages.
Is there a way to sync past messages between multiple devices?
Iphone/ipad are on iOS 10, Mac is on Yosemite.