Notification for user updates

I have an option to send an email to an arbitrary email address when a user updates their profile using rules. I want to send those fields which are updated by user.

How can I do this??

I am using the user, us开发者_如何学Pythoner_register_notify, and profileplus modules in Drupal.

Thanks in advance.

Steps:

1> You can use a custom submit callback where you can get he updated values in $form_state variable. This can be done in hook_form_alter(defining custom submit callback).

2> Put these variables in $params inside your custom submit callback. Now call a drupal_mail where you pass the $params as an argument.

3> Now define a hook_mail function and handle this mail in the required way.

Hope this helps.