A simple hack would be to add the following header to your emails: 
content-type: text/html

[download]
The correct and comprehensive solution has already been suggested by tachyon, however. 
   MeowChow                                   
               s aamecha.s a..a\u$&owag.print

In reply to (MeowChow) Re: How to format email so Outlook renders HTML by MeowChow
in thread How to format email so Outlook renders HTML by f0dder

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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