smtp diagnostics

SMTP Bulk Emailer for Windows by Lowrie Associates Ltd

Offer a boot function for hardware diagnostics

XRD provides a graphical user interface for Apple's Xserve Remote Diagnostics.

Spotlight for WebLogic Server - Real-time WebLogic application diagnostics

System Information & Diagnostics Utility for Windows. Freeware.

System Information & Diagnostics Utility for Windows. Freeware.

Complete email/SMS solution for a local network, mobile access with POP3/SMTP

Open source AJAX webmail script for existing POP3/IMAP/SMTP server or cPanel

SendEmail is a lightweight, command line SMTP email client.

AXIGEN FREE mail server-(E)SMTP,POP3,IMAP4,WebMail,RPOP,Groupware,basic support