ive upgraded from Win7 to win10 and accidentally forgot to backup my files before i upgraded. Ive lost all my files. including the file where Ive stored my keys for outlook express 6.

How can I retrieve my keys or have it send to me again?

Usually after upgrading from 7 to 10, the old files are stored on "C:\Windows.Old" directory.

Check if you have the windows.old folder on your c: drive



Your Keys have been sent on your email.