Mocking SMTP

Here's a great tip from .NetTipOfTheDay: a way to send e-mails with no SMTP server set up. Here's how:

 
<system.net>
 
   <mailSettings>
 
      <smtp deliveryMethod="SpecifiedPickupDirectory">
 
         <specifiedPickupDirectory pickupDirectoryLocation="c:\Test\" />
 
      smtp>
 
   mailSettings>
 
system.net>