<?php
//Custom data
//$salt is used for captcha generator, you can use any secret value
//$destinationEmail where the mail is sent
//$senderEmail: origin of the sent mail
//$destinationEmail and $senderEmail can be equals
//$subject for sent email 
//$maxAttempts: Maximum number of submission attempts if the CAPTCHA fails
$salt = "sdafew1235qwer1231243124";
$destinationEmail = 'admin@example.com';
$senderEmail = 'admin@example.com'; 
$subject = 'Booking/contact Form';
$maxAttempts = 5;
?>