picu-client-mail-message-filter.php

<?php // Change the default client email message

function my_custom_mail_message( $mail_message, $user_name ) {

	$mail_message = 'Nice!&#10;&#10;Now I have my own mail message.&#10;&#10;';
	$mail_message .= 'I can even automatically end the message with the current username:&#10;' . $user_name;
	return $mail_message;

}

add_filter( 'picu_client_mail_message', 'my_custom_mail_message', 10, 2 );