"After that, however, the ability to send or receive mail will be revoked."
How?? Aren't they stand alone local applications? I might be wrong about that, as I see very few people who run Mail, and I rarely have anything to do with it.
Just last week, in fact, one of them asked me to help with a problem switching to New Outlook. He'd got the thing installed, but, despite finding his existing ISP mail account, it wouldn't go any further than that. Buggered if I know why. After a little faffing around I found the manual setup option and just banged in his server details by hand, at which point mail began to flow. Yay.
While filling in the server details dialog, I noticed that one of the password boxes (SMTP server, I think) had little asterisks in the box, presumably indicating that you're supposed to type something here. The other, incoming server password box didn't have them, which was annoyingly inconsistent. The asterisks aren't the usual faintly greyed out look, either, but fairly dark which, coupled with their absence from the other box, initially caused me to believe that a password was already present. It wasn't, of course, but Iit wasn't obvious from the inconsistent design.
There was something else misleading in the same dialog, but I can't remember what it was, offhand, but it left me thinking that this newfangled mail app was very rough around the edges. I won't be using it.
Most domestic users seem happy enough with outlook.com or Gmail, but, since Microsoft have seen fit to impose this dubious software on those who prefer a local client, it would be nice if they finished it before ramming it down hapless users' throats.