The services listed on this services take a different approach to secure e-mail by using a third party -- usually a Public Key Server -- to handle the encryption and also control how long the recipient can read the message, whether the sender gets a receipt and other security features. Some also automatically compress attachments in your messages.
For S/Mime utilities, see S/MIME Encryption and Message Security Tools
PGP add-ins are now found at PGP Encryption and Message Security Tools
Public key servers and other services are listed at Secure E-mail Services
Tools and utilities which do not fit any of the above categories are list at Encryption and Message Security Tools
More Information
- Compression Tools -- Some of these tools can encrypt as well as compress attachments.
- Crypto Law Survey -- Encryption of e-mail is not universally legal. This site tracks encryption law around the world.
- X.400 Services
- OL2002- Exchange 2000 Account with Revoked Security Can Send and Receive E-mail
- Outlook S/MIME Vulnerability
- OL2002 Recipients Cannot Read Messages When 168-Bit (3DES) Encryption Is Enabled -- discusses UseAlternateDefaultEncryptionAlg registry value
- You Cannot Send Encrypted E-Mail Messages to a Contact While You Are Working Offline -- hotfix available for Outlook 2002
- Windows Prompts You for Your Password Multiple Times When You Use Outlook If Strong Private Key Protection Is Set to High -- hotfix available for Outlook 2002
- Quick Start for SMIME in Exchange Server 2003
- OL2002 Recipients Cannot Read Messages When 168-Bit (3DES) Encryption Is Enabled
- Signed E-Mail Message Displays the Incorrect Sending Address
RMail email encryption makes it easy to encrypt sensitive email messages and attachments for security or regulatory compliance.For more information: https://rmail.com/product/rmail/email-encryption