New User Save Filter

For this, you have to use user_register hook defined on wp-includes/users.php line 1759.

  • personal_options_update hook is called, when an user updating his
    own profile.
  • edit_user_profile_update is called, when an administrator updating other user profile.
  • nothing is called, when an administrator creating a new user.

On user-new.php page, new user are created using the edit_user function, function ref: (wp-admin/includes/users.php line 30)

So, the only option to use user_register hook.