Beware of emails from a fake site that states it would like to help you install windows 10. These have been found to contain Ransomware and when opened, hijacks your computers files and holds them for ransom where you have to pay to again access your files, photos, documents and so on on your computer. This comes from a hacker site, DO NOT OPEN!!!
Report the email to microsoft and go to a genuine microsoft site if you intend to upgrade to windows 10.
Charles Sanford, Sanfords Web Pages