This SDK provides SMTP and POP3 support for programming languages such as .NET, VB, CSharp, C#, VC++, VB.NET, Delphi, PHP, and Java. It comes with features like multiple recipients, attachments, HTML formatting, and authentication. Unicode and multiple character sets are supported. The package includes samples.

Furthermore, SMTP authentication (AUTH PLAIN, AUTH LOGIN, AUTH CRAM-MD5), POP3 authentication (Plain Text, APOP3), POP3 header download, and various encodings (7 bit, 8 bit, quoted-printable, base64) are integrated into the SDK. Sample codes are included for VB.NET, VC#.NET, VBScript, ASP, VB, VC++, Delphi, PHP, Java, Javascript, and more.
The software runs on any Windows platform, including Windows 2008 x86/x64, Windows 2003 x86/x64, Windows 2000, Windows 7 x86/x64, Windows Vista x86/x64, and Windows XP x86/x64. Overall, the SMTP and POP3 SDK offers a wide range of functionality and compatibility for email communication, making it a highly recommended tool for developers.
Version 3.1: N/A