bookingpress_get_email_notiication_reply_to_data

    add_filter('bookingpress_get_email_notiication_reply_to_data', 'bookingpress_get_email_notiication_reply_to_data_func', 10, 2);
    function bookingpress_get_email_notiication_reply_to_data_func($reply_to_data_arr,$appointment_id)
    {
        //$reply_to_data_arr Reply to email array
        //$appointment_id Appointment id
        
        return $reply_to_data_arr;
    }