SecExMail Gate - Version 1.2 SecExMail Gate is an email proxy server which encrypts and decrypts messages on your corporate network in real-time. This proxy server integrates with your existing corporate infrastructure and operates in conjunction with your SMTP/POP3 mail server. SecExMail Gate implements open standard encryption algorithms to create a seamless security framework to protect the privacy of your corporate email on the public internet. No additional software on the e-mail workstations on your network is required.