DeepCoder
With DeepCoder you can protect your privacy when you are sending confidential e-mails and/or files over the internet and when you are storing private files on your computer. DeepCoder is a program to encrypt, decrypt and/or digitally sign e-mails and files using secret keys (passwords) or public... ) E-mail DeepCoder can encrypt your e-mail message and makes them unreadable to anyone, except the person you send the mail to. ... - DeepCoder can encrypt and decrypt files. ... - DeepCoder works with any wordprocessing program to encrypt and decrypt (parts of) text.
http://www.devotechs.com/downloads/setup.exe - 803Kb - Download - Screenshot

CommuniCrypt Mail
Standalone eMail client with built-in strongest asymmetric Public-Key-Encryption with RSA encryption algorithm (RSAES-OAEP). Key length for encrypting up to 7120 bit. This eMail client is fully featured for receiving/sending mails via POP3/SMTP. With the integrated SMTP engine you do not need a... With the integrated file encryption/decryption tool you can encrypt or decrypt your mail attachments or all other files you like with strongest RSA Public Key encryption (key length from 338 bit up to 7120 bit) or with the symmetric AES Rijndael encryption (256 bit).
http://www.communicrypt.com/downloads/ccm_setup.exe - 5Mb - Download - Screenshot

Whitenoise Email Attachment Encryption
The Whitenoise encrypted e-mail attachment utility allows users of the Whitenoise E-Mail Attachment Utility to send securely encrypted e-mail attachments to recipients even if they do not have the Whitenoise e-mail encryption software. The sender, who is using the Whitenoise encryption utility,... The application that enables the recipient to decrypt the message that has been encrypted with the Whitenoise e-mail application is available for free download from our web site. ... 99 The E-Mail Decryptor is available for free by clicking on the link below.
http://www.whitenoiselabs.com/downloads/etrialsetup.zip - 612Kb - Download

PrivyPad
Create, edit, read and e-mail encrypted and plain text files with this Notepad-like text editor. It supports 4 strong encryption/decryption algorithms: BLOWFISH, Triple DES(3DES), RIJNDAEL(AES) and XOR. It allows to perform up to 100 encrypting/decrypting steps on highly sensitive information to... Mail, Hotmail, AOL Mail, etc. ... Use this utility to protect your private info, to encrypt/decrypt a secret document or file, to store business and credit card data or to keep any other strictly confidential data.
http://www.slavasoft.com/zip/privypad.zip - 2Mb - Download - Screenshot

Offsiter
Offsiter is an archiving application that compresses files and sends them encrypted to offsite e-mail accounts. Such offsite storage offers far greater security than conventional storage mechanisms such as CD ROM, tapes, and hard drives, all of which are prone to theft or damage. ... When the archive is sent to an e-mail account, it is divided into separate e-mail attachments so that the provider's size limit for e-mails is not breached. ... Each attachment is encrypted to prevent hackers gaining access to your files by intercepting them during sending or by breaking into your e-mail account.
http://www.silvawood.co.uk/Downloads/Install_Offsiter.exe - 503Kb - Download - Screenshot

Super File Encryption
Super File Encryption is a powerful and easy-to-use program for encrypting and protecting your data--perfect for offices that need to keep important documents secure. Super File Encryption adds a context menu entry to all files and folders. To encrypt or decrypt files/folder, simply right-click... The software also enables you to have secure e-mail communication over the Internet, preventing unauthorized persons reading attached files.
http://www.fileencryption.org/sfesetup.exe - 879Kb - Download - Screenshot

Firetrust Encrypt
Send secure, encrypted files via e-mail to anyone, anywhere, and anytime. Encrypt by Firetrust is a powerful encryption software that allows consumers and businesses to protect sensitive information, such as financial, medical, or other personal information, when sending e-mail or sharing files. ... A key benefit of Encrypt is that the recipient does not need to install any software or change any configurations to their computer in order to open, decrypt and read the e-mail and/or document. ... they are able to access the encrypted information regardless of their e-mail program, firewall,...
http://home.xtra.co.nz/hosts/nickbolton/download/encrypt1_1.zip - 0b - Download

S-Agent
S-Mail Agent is a one-step email encryption plug-in for any email software such as MS Outlook, Eudora, Mozilla, Outlook Express, Pegasus, TheBat! , Netscape Mail, etc. Email programs like Outlook are fast and easy-to-use, but they have one serious drawback - your messages are transmitted in... S-Mail Agent encrypts all your messages and attachments - encryption/decryption is automatic. ... You can also encrypt/decrypt any file on any data storage device in one-click. ... S-Mail Agent automatically configures most email programs.
http://www.s-mail.com/plugins/s-agent/S-Agent.zip - 647Kb - Download

Secure Storage Pro
Want to be absolutely sure your data is always protected? Want to have your files encrypted but don't want to hinder access to them? Get Secure Storage Pro, a virtual disk utility that encrypts data on the fly. Place all your confidential data (files, folders, documents, pictures, e-mails, etc)... If anyone launches your e-mail client, they won't see any encrypted messages, let alone being able to read them. ... But then you'll have to decompress and decrypt a file each time you want to access it.
http://www.secure-storage-pro.com/secure-storage-pro.exe - 1,009Kb - Download - Screenshot

Kremlin Encrypt
Kremlin 3. 0 provides a cross-platform security suite for Mac and PC. It builds a wall around your data, protecting your sensitive information from snooping intruders. Easily encrypt-decrypt your files in drag-and-drop manner with Kremlin Encrypt and Kremlin Decrypt tools. ... You can also schedule the Kremlin to automatically encrypt the files when you log off your computer and decrypt the files when you log back on. ... Use Kremlin Text, a secure full-featured text editor, to automatically encrypt your documents, notes and e-mail messages.
http://www.kremlinencrypt.com/release/KremlinInstaller.exe - 1Mb - Download - Screenshot