Easy yet powerful POP3, SMTP, IMAP components for .NET with MIME, SSL\TLS and proxy support. Well-designed, these components include lots of demos, tutorials and comprehensive documentation.

Key features:

Easy-to-use feature-rich components
Send\receive\manage HTML emails with images
Stable and robust code
SSL\TLS support for POP3, SMTP, IMAP in explicit and implicit modes
MIME support
Proxy support
Synchronous and asynchronous operations
Events for send/receive message progress
Add/load attachments from/to files
Error handling through .NET exceptions
Example of email client with source code for an IMAP client
Lots of C# and VB.NET demos
Comprehensive Developer’s Guide
100% managed code, written in pure C#
CLS (Common Language Specification) compliant.
.NET 2.0, 3.0, 3.5 and 4.0 support for 32/64bit platforms
Full C# source code available
Royalty-free distribution
Authentication methods ( Digest-MD5, CRAM-MD5) support
Typical firewalls and Socks4, Socks5 and HTTP CONNECT proxy servers are supported