SPA-Pro Mail Server Cost: $80 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions SPA-Pro Mail Server: This mail server(smtp/pop3/imap4) for Windows NT4.0/2000/XP, and is very excellent in cost performance. It mounts "Anti-Virus, Anti-Relay, IPv4/IPv6 and SSL".