Antrasoft Secure Messenger 3.5
The E-mail program for communication 100% securely. The program generates security certificates (public & private 1024 bit keys) , automatically exchanging public keys and install them into Windows to make your own personal 'circle of trust' between your partners. The program enables users to encrypt and digitally sign their e-mails or voice messages, ensuring a high level of confidentiality for your personal information.

FileCrypt - Encrypt & Compress Files 2.0
ByteShift lets you easily encrypt and compress confidential files for secure storage or transfer over insecure networks, such as via email attachments or instant messenger. ByteShift removes the need to use multiple programs to encrypt, compress and email your files by combining all three into an easy to use menu which appears when you right-click on any file. ByteShift works right out-of-the-box. Free 10-day Trial download.

Digital Document Encryptor 2008
Digital Document Encryptor is a certified and awarded software product suitable for both the enterprise and private user. Encrypt sensitive documents and other private digital information you have on your computer. Store information securely or send secure attachments by e-mail without worries. The receiver of an e-mail with an encrypted file will only need the right password and a browser to decrypt the e-mail locally.

Kinar KeepSafe FreeMail 1.4
Kinar KeepSafe is the easiest to use secure email solution available today. FreeMail provides the enterprise level security without any prior setup, use of passwords, or manual key/certificate exchange. Simply download, install and activate your existing email account as a secure e-mail account. Then you'll be ready to send encrypted e-mail and attachments to anyone with an email address. It's that simple. Does not install any spyware or adware.

SecExMail Home 1.51
SecExMail makes e-mail encryption as easy as sending a message. There are no plugins necessary and it will work with any standard email client including Microsoft Outlook, Outlook Express, Calypso, Eudora and many more. Now includes automatic key exchange and powerful html filtering to protect from malicious email. Personal Edition, including support can be purchased for $4.95 using PayPal or Credit Card. Commercial and Linux versions available.

Friend Mailer 1.12
Friend Mailer is private email communications software for home and business use. It transparently encrypts all the data transmitted over Internet and saved on hard disk- without any need for user intervention. It encrypts message text, attachments and reply-to header. Each user account can be protected by its own password. Friend Mailer can be used to safely send or share large number of pictures, audio and other files with your friends.

P-EncryptMail for Outlook 2.1.0.0
P-EncryptMail for Outlook is an add-in for Microsoft Outlook 2000 and up. It allows you to keep your messages and attachments private by using the most secure encryption algorithms. To use, just select the messages and click the Encrypt/Decrypt button, then enter a password. You can also send encrypted e-mail, the end user should know the password, and have a program capable of decrypt P-EncryptMail messages, such as the free P-EncryptMail reader

ZappoScreech 5.2.72
Tired of having your e-mail attachments blocked by mindless and intrusive mail-server snoopware? Then download ZappoScreech and take back the freedom to send and receive any type of e-mail attachment. ZappoScreech is a small application that will convert any kind of file to a legitimate bitmap for attachment to an e-mail. Upon receipt of the attached bitmap, ZappoScreech will recover the original file.