Sample Email Template Tag

/**

 * Register a custom email tag.

 *

 * @return void

 */

function prefix_add_sample_email_tag() {

	edd_add_email_tag(

		'custom_email_tag', // Tag

		'This is a custom email tag!', // Description

		'prefix_render_sample_email_tag', // Callback

		'Custom Email Tag', // Label

		array( 'order' ), // Optional contexts. `order` is the default.`

		array( 'customer' ) // Optional recipients. Omit to allow this to be used in any email. Options can include customer, admin, user.

	);

}

add_action( 'edd_add_email_tags', 'prefix_add_sample_email_tag' );

/**

 * Render the custom email tag (requires EDD 3.3.0).

 *

 * @param int    $email_object_id              The email object ID.

 * @param EDD\Emails\Types\Email $email_object The email object. This could be an order, license, user, etc.

 * @param string $context                      The context of the email. This could be order, license, user, etc.

 *

 * @return string

 */

function prefix_render_sample_email_tag( $email_object_id, $email_object = null, $email = null ) {

	if ( 'order' === $email->context ) {

		return $email_object->currency;

	}

	return 'This is not an order email.';

}