Powerby disable on email footer. Default is true.

Source

File: /inc/class-email-template.php
Used by: /inc/class-email-template.php

Example:

function prefix_wp_travel_disable_email_template_poweredby() {
    return true;
}
add_filter( 'wp_travel_disable_email_template_poweredby', 'prefix_wp_travel_disable_email_template_poweredby' );