After the win 10 update last night, my email stopped working.  I contacted my provider and we changed from a POP3 account to an IMAP one.  I moved the existing POP3 email messages into the new IMAP email acct folders, but they are not readable as each comes up with : 

Windows Live Mail encountered an unexpected problem while displaying this message. Check your computer for low memory or low disk space and try again.

I tried moving the messages back to the POP3 email account folders but get error message saying "Some of the copied messages could not be downloaded and were not copied".

I have tried repairing Windows Essentials, it too failed. I am very upset that after the win10 update yesterday, it had reset and turned OFF my system restore, so that option is NOT available.

Can someone please assist me?  Thank you.