PrimaSoft Encryption - Service Edition
Service Process: You can run scheduled auto-recurring encryption and decryption sessions as a service process. Encryption Scheduler: PrimaSoft Encryption utility comes with flexible scheduler. You can schedule auto recurring encryption sessions for any future date and time. ... Encryption algorithms: AES (US Advanced Encryption Standard) secret-key encryption algorithm known as Rijndael. ... Encryption Log: Our software maintains a detailed Activity Log so you can easily find out which encryption sessions were successful, which failed and why.
http://www.primasoft.com/demo/encsched.exe - 1Mb - Download - Screenshot

Babastik's AntiSpam Personal
The no nonsense, no compromise solution to stopping unsolicited email from cluttering your inbox. For Microsoft® Windows 98/Me/NT/2000 and XP. AntiSpam Personal uses what is called a White-list with Challenge and Response validation to stop emails from forged or invalid email addresses from... Any email from a source not in that list of familiar email addresses is sent a verification email to verify the email is from a legitimate email user. ... * Automatically uses the latest industry standard encryption when exchanging information with your email server, regardless of whether your email...
http://www.babastik.com/downloads/AntiSpam-Version-1.0.4.5.exe - 10Mb - Download - Screenshot

Easy Email Encryption
Easy Email Encryption is for sending and receiving encrypted email (optionally with attached files up to 100 KB), and is designed to be easy to use. It works with any email program, including Outlook Express. It uses a symmetric key method, and keys are maintained in an encrypted list of keys... The software allows you to maintain a list of encryption keys, each associated with a particular recipient (or group of recipients), so that you don't have to re-enter the encryption key each time you wish to send a message to a particular recipient.
http://www.hermetic.ch/eee/eee_setup.zip - 2Mb - Download - Screenshot

Email Security Labels for Outlook
Email security classifications for Outlook provides an easy to use method for users to select a security classification for outbound messages. This easily deployable solution for classifying emails in corporate, government and military environments ensures that confidential information doesn't... You can use Email Security Labels for Outlook, in combination with gateway security software, to ensure that confidential emails are not permitted to leave the network without encryption. ... This product was designed to comply with Defence Signal Directorate's (Australia) rules about email...
http://www.qdsecurity.com/downloads/classify-trial.exe - 2Mb - 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

FineCrypt
Professional encryption tool with the following features: highly secure encryption with a single mouse click; secure communication with other users by email; task manager; key manager; file manager; encryption of files, folders and whole directory trees; creation of encrypted archives; creation...
http://www.finecrypt.net/fcinst.exe - 4Mb - Download - Screenshot

Public Key File and Email Encryption freeware
DeltaCrypt OneClick Personal does it all: This Public Key Encryption Software encrypts files, text and emails with 1024-bit RSA protection, digital signatures, and unalterable public keys. It offers the basic encryption functionalities FREE OF CHARGE. ... DeltaCrypt applications provide sophisticated features and a user-friendly interface to keep encryption simple and easy. ... Moreover,DeltaCrypt wipes out original source files, when requested at encryption, by replacing the original data with binary ‘00’.
http://www.deltacrypt.com/next/_demo_/setup.exe - 1Mb - Download - Screenshot

MF Encryption Pad
MF Encryption Pad is a simple (and free) application that lets you encrypt and decrypt rich text messages using cut and paste. MF Encryption Pad uses 256-bit AES encryption with a key that it generates from the 'Pass Phrase' you supply. It can open and save both text files (. ... MF Encryption Pad is create for keeping confidential notes, and for encrypting email or short instant messages. ... MF Encryption Pad 2. ... 0 Offers Enhanced Formatting! ... txt) and rich-text files (. ... rtf).
http://www.mediafortresspro.com/download/EncryptionPad.msi - 1Mb - Download - Screenshot

Private Encryptor
Utilize the latest in encryption technology to protect your sensitive data. Privacy tools include file/folder encryption, e-mail encryption, file/folder shredder, file/folder Backup with auto encryption, My Passwords, My Private Notes, Installable Encryption Modules, Compression, Context Menu... Registered version has DES, and Blowfish encryption, stronger encryption available as an add on. ... Since the Stealth Decryptor can be downloaded free from our website, the receiver of an encrypted email message does not have to buy the program.
http://www.tropsoft.com/encryptorsetup.exe - 1Mb - Download - Screenshot

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... Work with secure email via your favorite email software! ... S-Mail Agent encrypts all your messages and attachments - encryption/decryption is automatic. ... Enjoy secure and handy email! ... S-Mail Agent automatically configures most email programs.
http://www.s-mail.com/plugins/s-agent/S-Agent.zip - 647Kb - Download