Have you looked at the mass mailer in the admin panel?
Just create a nice pretty email template. Then you can create "newsletters" and send them out that way. I think they go out like 20 at a time to keep from tripping any anti spam settings from your ISP as well.
This is a base template I created (modified for each message type that goes out), this one is for
Email template for message sending from the Admin Panel.
<table style="padding: 5px; width: 500px;" cellspacing="0" cellpadding="0" bgcolor="#222222">
<tbody>
<!-- Image Block -->
<td width=500px style="background-color: #202020;">
<table width="500px">
<td width="100%" align="center" valign="middle">
<a href="<SiteUrl>"><img width="156" border="0" height="28" src="http://mytikibar.servebeer.com/media/images/small_logo.png"></a>
</td>
</table>
<!-- End Image Block -->
<tr>
<td style="font-family: Arial,Verdana,sans-serif; padding: 5px; background-color: #808080; height: 203px;" valign="middle">
<!--Body of Message -->
<p><span style="color: #202020;"><b>Dear <RealName></b>,</span></p>
<p><span style="color: #202020;">The following is a system message from <SiteName>.</span></p>
<p><span style="color: #202020;">==============</span></p>
<MessageText>
<p><span style="color: #202020;">==============</span></p>
<!-- End Body -->
</td>
</tr>
<tr><td width="100%">
<!-- Begin Footer -->
<table style="width: 500px; height: 50px;" cellspacing="0" cellpadding="0">
<tbody>
<tr >
<td style="font-size: 8px; font-family: Arial,Verdana,sans-serif; color: #ffffff; text-align: center;" bgcolor="#202020">
My Tiki Bar Auto Generated E-mail.<br>Please do not reply.<br>
We NEVER ask for your password via e-mail.<br>
Copyright © 2011 '<a href="<SiteUrl>">My Tiki Bar</a>' All rights reserved.</td>
</tr>
<!-- End Footer --></td>
</tr>
</tbody>
</table>
</tbody>
</table>