During development, you might prefer just to write mails to a local directory, so you can see what’s happening without having to set up an actual mail server. To do that, use these settings:
<specifiedPickupDirectory pickupDirectoryLocation="c:\email" />
This will write .eml files to the specified folder (here, c:\email), which must already exist and be
writable. If you double-click .eml files in Windows Explorer, they’ll open in Outlook Express or Windows Mail.