Cacher is the code snippet organizer for pro developers

<?php

/**
 * Disable PDF Tickets getting attached to emails.
 *
 * @link https://gist.github.com/cliffordp/d6fb957958a73a11f171e5b9c7406938/edit
 * @link https://theeventscalendar.com/extensions/pdf-tickets/
 */
add_filter( 'tribe_ext_pdf_tickets_attach_to_email', '__return_false' );