Все программы от Rebex

SMTP over SSL, IMAP over SSL, POP3 over SSL, S/MIME - sending, receiving and processing emails from .NET framework application along with mail signing, encrypting and signature verification.

FTP/SSL for .NET is a file-transfer component for .NET framework. It allows you to transfer files directly from your application using FTPS which is also known as FTP over SSL/TLS.