There are some standard template files included with Mercury, for instance failure.mer. So for example, try replacing "Content-type: Text/plain; charset=US-ASCII" with "Content-type: Text/plain; charset=utf-8".
There are some standard template files included with Mercury, for instance failure.mer. So for example, try replacing "Content-type: Text/plain; charset=US-ASCII" with "Content-type: Text/plain; charset=utf-8".