S22.Imap
A free .NET library for accessing IMAP servers, written in C#
... over SSL
* API designed to be very easy to use
* Allows selectively fetching parts of mail messages
* Inherently thread-safe
* Well documented with lots of example code
* Free to use in commercial and personal projects (MIT license)
NOTE: THIS PROJECT HAS BEEN MOVED TO GITHUB. PLEASE GO HERE FOR THE LATEST VERSION: https://github.com/smiley22/S22.Imap