wc-licensed-product/templates/emails/plain/license-expiration.php

<?php
/**
 * License Expiration Warning Email (Plain Text)
 *
 * This template can be overridden by copying it to yourtheme/woocommerce/emails/plain/license-expiration.php.
 *
 * @package Jeremias\WcLicensedProduct\Templates\Emails
 * @version 0.0.8
 *
 * @var \Jeremias\WcLicensedProduct\License\License $license
 * @var int $days_remaining
 * @var string $product_name
 * @var string $expiration_date
 * @var string $email_heading
 * @var string $additional_content
 * @var bool $sent_to_admin
 * @var bool $plain_text
 * @var \Jeremias\WcLicensedProduct\Email\LicenseExpirationEmail $email
 */

defined('ABSPATH') || exit;

echo "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n";
echo esc_html(wp_strip_all_tags($email_heading));
echo "\n=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n\n";

$customer = get_userdata($license->getCustomerId());
$customer_name = $customer ? $customer->display_name : __('Customer', 'wc-licensed-product');

echo sprintf(esc_html__('Hello %s,', 'wc-licensed-product'), esc_html($customer_name)) . "\n\n";

if ($days_remaining === 1) {
    echo sprintf(
        esc_html__('Your license for %s will expire tomorrow (%s).', 'wc-licensed-product'),
        esc_html($product_name),
        esc_html($expiration_date)
    ) . "\n\n";
} else {
    echo sprintf(
        esc_html__('Your license for %1$s will expire in %2$d days (%3$s).', 'wc-licensed-product'),
        esc_html($product_name),
        $days_remaining,
        esc_html($expiration_date)
    ) . "\n\n";
}

echo "----------\n";
echo esc_html__('License Details', 'wc-licensed-product') . "\n";
echo "----------\n\n";

echo esc_html__('Product:', 'wc-licensed-product') . ' ' . esc_html($product_name) . "\n";
echo esc_html__('License Key:', 'wc-licensed-product') . ' ' . esc_html($license->getLicenseKey()) . "\n";
echo esc_html__('Domain:', 'wc-licensed-product') . ' ' . esc_html($license->getDomain()) . "\n";
echo esc_html__('Expires:', 'wc-licensed-product') . ' ' . esc_html($expiration_date) . "\n\n";

if ($additional_content) {
    echo "----------\n\n";
    echo esc_html(wp_strip_all_tags(wptexturize($additional_content)));
    echo "\n\n";
}

echo esc_html__('View My Licenses', 'wc-licensed-product') . ': ' . esc_url(wc_get_account_endpoint_url('licenses')) . "\n\n";

echo "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n";