soft Outlook, this setting can be found at the "Mail Format" tab of the Tools/Options menu.</li>
        
<li>Use a mail client that respects the <em>References</em> and/or <em>In-Reply-To</em> mail header entries. This is important for mail clients that can display threads as trees. <strong>Compliant mail clients</strong> include Microsoft Outlook, Becky!, KMail, Apple Mail, Ximian Evolution, Mozilla (version 1.2 or greater). Non-compliant mail clients include Microsoft Exchange, Lotus Notes, Internet Mail