Terry, my understanding is that you can still use Live Mail but your @live, @outlook, @hotmail, @msn accounts must be changed from Delta Sync to IMAP. Your contacts and calendar will no longer sync but the mail portion should work fine. Here is a link to my information.
http://answers.microsoft.com/en-us/wind ... dcb1ab69bcAccording to the above link the deadline was today, 6/1/16 yet I am still having no issue with Live Mail, still working fine... (fingers crossed) Of course if it stops working I'll just switch to Outlook as my mail client but that only works for you if you have Office installed with Outlook.
Quite a while back, guessing a couple of months, I seem to remember an email or discussion dealing with this issue on these forums. It was an opt in choice to maintain the usability of Live Mail. I know that I did the opt in and all is still fine with me and Live Mail. The opt in involved the install of an update to Live Mail.
I just checked and my @Hotmail account is using Delta Sync without apparent issue.
If you did not do the opt in you should probably still be able to use Live Mail if you set up your Microsoft email accounts as IMAP.