All my email sub folders were wiped out and show up as recovered items under storage folders, disorganized

When I logged into Windows Live Mail a message said "recovering emails" and discovered that all my sub folders were gone and inbox, deleted items, junk etc were all empty as if I had just established this email account that contained nothing. All my files then showed up under Storage Folders in recovered items in an unorganized manner many of the folder names distorted with numbers. This has happened 3 times since installing Windows 10. I now have recovered files for 3 different dates.