mypmpro-add-renew-link-email-templates.php

<?php //do not copy

/**
 * This recipe creates a renewal URL email template variable. 
 * Add !!renew_url!! to your email template.
 * 
 * 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/
 */

// Add only renew_url variable to the custom templates.
function my_pmpro_custom_email_data( $data, $email ) {

	$data['renew_url'] = pmpro_url( 'levels' );

	if ( ! empty( $data['membership_id'] ) ) {
		$data['renew_url'] = pmpro_url( 'checkout', '?pmpro_level=' . $data['membership_id'], 'https' );
	}

    return $data;
}
add_filter( 'pmpro_email_data', 'my_pmpro_custom_email_data', 20, 2 );