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Secure E-mail Services

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

Tools
CertifiedMail   Secure message delivery and tracking service. Send Certified adds a button to Outlook or the Exchange client to send encrypted messages through the Certified Mail system.
eCipher   eCipher allows you to send and read encrypted messages directly through your existing desktop email client (Outlook, Thunderbird, Eudora). The current version supports reading encrypted mail from any webmail client (Gmail, Yahoo!, AOL, etc.). eCipher protected emails utilize strong encryption and digital signatures, ensuring that they can only be opened by the intended recipients. eCipher also provides extra security options for your email, including the ability to prevent message forwarding, copying, saving, and printing. Free trial.
GnuPG-Plugin   Encryption add-in for Outlook. Both recipient and sender need to be using it. Available in English and German versions. Source code available, too. Free.
MailedSAFE   DES encryption services with delivery confirmation, random key encryption (no exchange of public keys required), and automatic key management.
Mirracrypt Encryption for Outlook   Mirracrypt integrates seamlessly with Outlook 2003 & 2007 to provide powerful Sender-to-Receiver Email Encryption that is convenient and easy-to-use. Mirracrypt is the perfect add-on program for any Outlook user who requires privacy & security.
ReadNotify   Service to provide delivery receipts, read receipts, and other tracking. Also supports self-destructing and unprintable messages and message retraction.
Sentris Protection for Exchange   Sentris Protection is a classification labeling and validation service for Microsoft Exchange and Outlook. Sentris Protection adds its own toolbar to Microsoft Outlook that enables users to add portion markings as they compose e-mail messages, appointments, meeting requests, and tasks. It sets a message's minimum classification based on its portion markings and the marking of documents attached to the message and prompts the user to classify the message and enter information for the classification block and will only deliver the message to users who have appropriate access to the network and the facility. Sentris Protection also conducts a sensitive word search before each message is sent.
Sigaba   Secure email gateway that sits between the mail server and firewall. Comes with a plugin for Outlook that makes it easy to send secure messagesto anyone with an Internet connection and control when they can be read. Also supports several other mail clients.
ZixMail   E-mail and message tracking service using a public key server, with direct Outlook integration via a free add-in. Also compresses and encrypts file attachments.
Back to Top

 

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.
  • Digital IDs with Microsoft Outlook 98
  • 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

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    Updated Oct 06 2009
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