WordPress at a glance
filter is not described

newuser_notify_siteadmin filter-hook . WP MU

Filters the message body of the new user activation email sent to the network administrator.

Usage

add_filter( 'newuser_notify_siteadmin', 'filter_function_name_6237', 10, 2 );
function filter_function_name_6237( $msg, $user ){
	// filter...

	return $msg;
}
$msg(string)
Email body.
$user(WP_User)
WP_User instance of the new user.

Notes

  • Since MU (3.0.0)

Where the hook is called

newuser_notify_siteadmin()
newuser_notify_siteadmin
wp-includes/ms-functions.php 1337
$msg = apply_filters( 'newuser_notify_siteadmin', $msg, $user );

Where the hook is used (in WP core)

Does not used.