Add Gateway Donation Field

/**

 * This snippet shows how to enable an email tag for the gateway_label

 * donation field.

 *

 * This same pattern can be used to enable email tags for other

 * donation fields. Find a list of the default donation fields

 * inside Charitable at includes/fields/default-fields/donation-fields.php

 */

function ed_charitable_add_donation_gateway_email_tag() {

	charitable()->donation_fields()->get_field( 'gateway_label' )->email_tag = true;

}

add_action( 'init', 'ed_charitable_add_donation_gateway_email_tag' );