This client is also a public key e-mail tool that automatically encrypts all of your messages. It includes an anti-spam e-mail client that automatically classifies incoming messages. Antivirus support is included.

pGeep is a free software made available to all for easy encryption of emails and files alike. Integrated to Windows 2000/XP, pGeep allows to encrypt documents and folders in 1 click. pGeep ships with pGeep Companion for Outlook Office, a plug-in which offers total integration in the workflow of Outlook Office users.

SDS is an e-security suite of crypto e-mail, secure password manager, zip manager.

Encrypt and sign your e-mail messages, just by pressing the “Send” button in your e-mail program with Izemail. No need to exchange encryption keys or certificates, no need to go through complex enrollment procedures. The program allows you to send an encrypted and signed message, and all you need to know is their e-mail address.

Izemail for Outlook 1.7 … read more »

Encrypt and sign your e-mail messages when you press the Send button in your e-mail program. This program supports S/MIME and PKI. Izemail works with any mail program that supports POP3 and SMTP.