smtp

SMTP component for sending email using the SMTP/ESMTP protocol. Supports IPv6.

SMTP server program to send email messages without help of your ISP directly.

smtp server software, send mails amazingly

SMTP and POP3 tool for VBScript, ASP, VB, VC++, VB.NET, VC#.NET, Delphi, PHP

Free SMTP Server is a local SMTP server program for Windows

Advanced SMTP Server is a local SMTP server program for Windows

HS SMTP Protocol C Source Library, supports SMTP over TLS

1st SMTP Server - free SMTP relay server.

Disclaimer, S/MIME for IIS SMTP Service and Exchange Server.

DomainKeys/DKIM for IIS SMTP Service and Exchange Server.