POP3 is a protocol for retrieving mail from a mailbox on a remote server. It is a simple protocol that does not provide any advanced mail or folder management capabilities - these are offered by IMAP, and an IMAP component is a part of Rebex Mail for .NET as well.
Major features

* Download mail as an instance of MailMessage or MimeMessage.
* Download mail to a disk file or stream.
* Download message headers without the body.
* Retrieve message list filled with the specified info, such as size, sequence number, unique ID or headers.
* Automatically detects and uses supported POP3 extensions.
* Both synchronous and asynchronous operations. Designed according to .NET Framework asynchronous operations design patterns.
* Authentication to the POP3 server.
* Events can raised when command is sent, response is receiving or data is transferred.
* Custom commands and enhanced status codes.
* Proxy support.
* Compatible with both state-of-the-art and legacy POP3 servers.
* Compliant with RFC 1939, 2449, 1734, 1321, 2195, etc.