Encryptomatic
The history of email encryption. an overview of email encryption systems. which email encryption system is best? how do they compare?
http://www.encryptomatic.com/emailsecurity/email-encryption-systems.html
Support
Support
https://support.astaro.com/support/images/b/be/235583.pdf
Cryptoheaven
Cryptoheaven
http://www.cryptoheaven.com/ch/web-mail.jsp
Ibm
Ibm
http://www.ibm.com/software/lotus/products/protector/mailencryption/easiestpath.html
Securityfocus
Securityfocus is designed to facilitate discussion on computer security related topics, create computer security awareness, and to provide the internet's largest and most comprehensive database of computer security knowledge and resources to the public. it also hosts the bugtraq mailing list.
http://www.securityfocus.com/tools/7085
Group IQ.Suite
Group technlogies ag - virus protection, security, and content filtering for lotus domino and exchange 2000 enterprise email systems
http://www.group-technologies.com/en/products/products/crypt.php
Messagingsolutions
Gateway email encryption policy-based email encryption and digital signing for data leakage prevention and regulatory compliance.
http://www.messagingsolutions.com/MailMarshal%20Encyrption.htm
SecurE-Mail Gateway
Secure-mail gateway is the intelligent solution for the automatic use of e-mail encryption and signature.
http://www.utimaco.com/c12570cf0030c00a/currentbaselink/w26k9k44363obelen