WordPress at a glance
filter is not described

user_erasure_fulfillment_email_to filter-hook . WP 4.9.6

Filters the recipient of the data erasure fulfillment notification.

Usage

add_filter( 'user_erasure_fulfillment_email_to', 'filter_function_name_6027', 10, 2 );
function filter_function_name_6027( $user_email, $request ){
	// filter...

	return $user_email;
}
$user_email(string)
The email address of the notification recipient.
$request(WP_User_Request)
The request that is initiating the notification.

Where the hook is called

_wp_privacy_send_erasure_fulfillment_notification()
user_erasure_fulfillment_email_to
wp-includes/user.php 3154
$user_email = apply_filters( 'user_erasure_fulfillment_email_to', $request->email, $request );

Where the hook is used (in WP core)

Does not used.