Hi Kiran,
As said by Mylene, you cannot get change document history for address data.
You can check for the user who has executed SU01, as SU01 is the only option to change Email address of a user.
So goto ST03 and find the users who had executed SU01 and check with those user id's.
If you have a CUA in your landscape you can check for the USERCLONE idocs for the user id, and check the user id who has triggered those idocs.
Regards,
Laxman