This is the software for sending and receiving E-mail. Along with basic functions as mail soft, can use SMTPS (SMTP over SSL/TLS) and POP3S (POP3 over SSL/TLS) to improve security. Supports SMTP Authentication (SMTP-AUTH) by CRAM-MD5, LOGIN, PLAIN, and supports APOP Authentication. Supports RFC2231 format as an encoding method of the file name. You can buy the source code (C#2005, VB2005, C#.NET, VB.NET) of this software.