SMTP Watcher is a tool designed to monitor your SMTP servers. This program is mainly intended for use by web administrators and server administrators. Your SMTP server is the one that is responsible for incoming mail. If it goes down, then people won't be able to send you mail. SMTP Watcher sits in the windows system tray and continuously polls your SMTP server to make sure it is online.
Real Time email scanner for SMTP Server
SMTP e-mail SDK for VBScript,VB,VC and .NET
SMTP E-mail Toolkit
ASP.NET email component
Securely send mails via SMTP protocol