This recipe makes the !!renewaldate!! variable available for use in all Paid Memberships Pro emails.

my_pmpro_email_renewaldate_data.php

<?php
/**
 * This recipe makes the !!renewaldate!! variable available for use in all Paid Memberships Pro emails.
 * When the variable is empty it will display nothing instead of the !!renewaldate!! email variable
 *
 * Notice the array key does not include the !!s
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */

function my_pmpro_email_renewaldate_data( $data ) {

	$data['renewaldate'] = date( get_option( "date_format" ), pmpro_next_payment() );

	return $data;

}
add_filter( 'pmpro_email_data', 'my_pmpro_email_renewaldate_data', 10 );