The less text your email has, the more easily it can get through the spam filters. So you can use a format like this which is from my 5-Day Google AdWords autoresponder at www.perrymarshall.com/google:
Hi Jack,
Today’s ‘5 Days to Success with Google AdWords‘ course is online at:
http://perrymarshall.com/google/day2.htm
The title is: ‘The Bid Price is NOT the Price You Pay — and Why it’s Good for You’
Click on the link above and read it now… or…if you’re an AOL user, click on the link below:
<a href=’http://perrymarshall.com/google/day2.htm’>Day 2</a>
Sincerely,
Perry