I have my own domain and I use desktop email clients, so I always have a full copy of my email archive. It would take me at most 1 hour to move, on the clock.

I have my own domain and I use desktop email clients, so I always have a full copy of my email archive. It would take me at most 1 hour to move, on the clock. I know because I moved between email provides about 3 times already. ("imapsync" helps)