This is basically correct!
You should also know that folks who are remiss to upgrade anything on their 10 year old computers (as many of my Customers do not want to do), let alone have to change their E-mail address they've had for 20 years! Ugghhh!
So, folks with Hotmail and MSN.com addresses are on M$ crap-list and now have to pay an annual fee ($49.95 or so) to keep their E-mail address from the Jurassic era when dinosaurs such as computers with Win3.1 walked the earth! Even if you pay M$ the cash to keep your ancient Hotmail (that's been discontinued for about 6 years now!) or your MSN.com E-mail, they don't work very well with some of the above-mentioned E-mail clients such as older versions of Outlook (older than Outlook2007) or any versions of WLM since M$ has removed the outlook-connector pack from working on their back-end servers. I just went through repairing E-mail for a Customer who had her 20-year old MSN.com address (she refused to update since it was for her business), and did get it working on Outlook 2007 after much confusion and of course cleaning out 9 years worth of E-mail she never touched, filed, or deleted any of her messages; resulting in an inbox with over 22,000 messages in it.
Took me a week to fix. Fortunately for her, she wasn't using WLM, or Outlook2003 or older!
From what I can see, M$ is indeed taking steps to consolidate all these paleolithic E-mail users to newer versions of their Mail, whether it's W10 Native Mail or Outlook365 (via Office365 subscription). So for users who are unwilling to move into the modern era E-mail (2009 or newer), using alternative E-mail clients such as EM-Mail, PO Box, Thunderbird, whatever is a Band-Aid to the M$ dreadnaught of E-mail consolidation and obsolescing of older platform support. This has been going on with them forever, going back to Outlook Express97. These band-aids will work for some home users, and some corporate users, but certainly, not for all of them. Of course, if Microsoft E-mail was perfect, none of these after-market E-mail apps would even exist in the first place!
Cheers!
BBJ