on &action=edit.
$EditPage: the EditPage object
+'AlternateUserMailer': Called before mail is sent so that mail could
+be logged (or something else) instead of using PEAR or SMTP
+$UserMailer: the EditPage object
+$headers: Associative array of headers for the email
+$to: MailAddress object or array
+$from: From address
+$subject: Subject of the email
+$body: Body of the message
+
'APIAfterExecute': after calling the execute() method of an API module.
Use this to extend core API modules.
&$module: Module object