Ticket #33787: wp-test-email.php

<?php
/**
 * @package WP_Test_HTML_Email
 * @version 1.0
 */
/*
Plugin Name: WP Test HTML Email
Plugin URI: http://wordpress.org/extend/plugins/wp-test-html-email/
Description: This is just a demo plugin for core ticket
Author: Umesh Kumar
Version: 1.0
Author URI: http://codechutney.com
*/
function wp_test_html_email() {
        $content = __( "<br /> <b>Content being sent: </b>Payment Amount: &#x20ac;2.00 EUR" );
        print_r( $content ); ?>
        <br/><br/>
        <form method="post">
                <label>Email:<input type="text" name="test_email" value=""/></label>
                <input type="submit" name="wp_send_test_email" id="wp_send_test_email" class="button button-primary button-large" value="Send test email">
        </form>
        <?php
        if ( $_POST['wp_send_test_email'] && !empty($_POST['test_email']) ) {
                $mail = wp_mail( $_POST['test_email'], "Test Email", $content );
                if( $mail ) {
                        echo "Email sent to: " . $_POST['test_email'] ;
                }
        }
}

function wp_test_html_email_page() {
        add_management_page( "Euro sign converted to Emoji URL", "Test HTML Email", 'manage_options', 'wp-test-html-email', "wp_test_html_email" );
}

add_action( 'admin_menu', 'wp_test_html_email_page' );
add_filter( 'wp_mail_content_type', 'set_content_type' );
function set_content_type( $content_type ) {
        return 'text/html';
}

?>