How can I receive mail using .NET?

Question

I need an open source C# program that can receive SMTP messages and save them in a class (and sends mail, but this is optional since I found a lot of those)

Does this program use SMTP or POP3 to receive mail?

Answer 1

Not sure if this is exactly what you're after, but what I used to grab/view mail is Papercut, found here on codeplex.

You can see how it listens for mail, etc in the source. It's handy for just sitting in your tray and viewing messages as they come in without needing a SMTP server setup at all. It acts as the SMTP server, just point the app sending mail the machine running it.