MT - ET - ET+ - Change email From Address and From Name only when sending ticket emails -- works for RSVP and WooCommerce

functions.php

<?php

/**
 * MT - ET - ET+ - Change email From Address and From Name only when sending ticket emails -- works for RSVP, WooCommerce, and Easy Digital Downloads
 *
 * From https://gist.github.com/cliffordp/35d3c0a08e53b061920976f80f0f44b4
 *
 * For https://theeventscalendar.com/support/forums/topic/change-the-sender-email-address-for-all-events-ticket-related-emails/
 */

// RSVP
add_action( 'event_tickets_rsvp_tickets_generated', 'cliff_et_custom_from_email' );

// WooCommerce
add_action( 'event_tickets_woocommerce_tickets_generated', 'cliff_et_custom_from_email' );

// EDD
add_action( 'event_tickets_edd_ticket_created', 'cliff_et_custom_from_email' );

// call the other functions via filters
function cliff_et_custom_from_email() {
    // RSVP
    add_filter( 'wp_mail_from', 'cliff_custom_tickets_email_from' );
    add_filter( 'wp_mail_from_name', 'cliff_custom_tickets_email_from_name' );

    // WooCommerce
    add_filter( 'woocommerce_email_from_address', 'cliff_custom_tickets_email_from' );
    add_filter( 'woocommerce_email_from_name', 'cliff_custom_tickets_email_from_name' );

    // EDD
    add_filter( 'edd_email_from_address', 'cliff_custom_tickets_email_from' );
    add_filter( 'edd_email_from_name', 'cliff_custom_tickets_email_from_name' );
}

// set the Email From Address
function cliff_custom_tickets_email_from() {
	// From Address
	$address = 'tickets@example.com'; // manually enter this
	$address = sanitize_email( $address );
	return $address;
}

// set the Email From Name
function cliff_custom_tickets_email_from_name() {
	// From Name based on site settings, or manually enter this too
	$name = sprintf( 'Tickets from %s', get_option( 'blogname' ) ); // e.g. Tickets from Cliff's Event Site
	$name = esc_html( $name );

	return $name;
}