Multibyte Mail 1.2
This plugin for WordPress
replaces the wp_mail() function with one that allows 8-bit
and multibyte characters to be used safely in the From:,
Reply-To: and Subject: headers.
Download: mbmail.php
Requirements
WordPress 2.0 or 2.1. This plugin is no longer needed with WordPress 2.2 or later.
Installation
Download mbmail.php and save it in
the wp-content/plugins directory of your WordPress
installation. Activate the Multibyte Mail plugin in
the Plugins admin page.