custom-email-per-level-for-checkout-free.php

<?php
/**
 * Customize the 'checkout_free' email template based on membership level.
 *
 * This function modifies the email subject and body for Level 1, (you can chage the ID)
 * while leaving other levels with the default 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/
 */
function my_pmpro_email_filter_checkout_free_per_level( $email ) {
    // Check if the email being sent is the 'checkout_free' template.
    if ( $email->template == 'checkout_free' ) {
        // Retrieve the membership level ID from the email data.
        $level_id = $email->data['membership_id'];

        // Customize the email for Level 1.
        if ( $level_id == 1 ) {
            $email->subject = 'Welcome to Level 1!';
            $email->body = 'Thank you for joining Level 1. Here are your exclusive benefits...';
        }
        // For other free levels, you can add additional conditions if needed.
        // Otherwise, they will use the default 'checkout_free' template.
    }

    // Replace any remaining email variables with the actual data.
    if ( is_array( $email->data ) ) {
        foreach ( $email->data as $key => $value ) {
            if ( 'body' != $key ) {
                $email->body = str_replace( '!!' . $key . '!!', $value, $email->body );
                $email->subject = str_replace( '!!' . $key . '!!', $value, $email->subject );
            }
        }
    }

    return $email;
}
add_filter( 'pmpro_email_filter', 'my_pmpro_email_filter_checkout_free_per_level', 99, 1 );
?>