Secure E-mail Services

Last reviewed on December 10, 2012

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

M86 MailMarshal Email Content Manager

M86 MailMarshal ECM (formerly M86 MailMarshal Exchange) is a flexible, scalable email policy management solution for Microsoft Exchange 2007 and 2010. Using deep content inspection technology, it simplifies compliance by ensuring inbound, outbound and internal email-including text, images and file attachments-adhere to data loss prevention and AUP requirements. Its scalability, centralized management and reporting, ease of deployment and minimal administration overhead make M86 MailMarshal ECM the most robust, yet cost effective internal email security solution available.

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.

Proofpoint Encryption

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.

ReadNotify

Service to provide delivery receipts, read receipts, and other tracking. Also supports self-destructing and unprintable messages and message retraction.

SecureMail

Secure message delivery and tracking service. SecureMail makes sending encrypted email as simple as clicking a button. Because SecureMail delivers directly to your recipient’s regular inbox, retrieving a secure email is just as easy. You can point the recipient to a URL to pick up their email, or send it as a PDF file right to their inbox.

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.

ZixMail

E-mail and message encryption service using a public key server, with direct Outlook integration via a free add-in. Also compresses and encrypts file attachments.


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Written by

Diane Poremsky
A Microsoft Outlook Most Valuable Professional (MVP) since 1999 and involved in IT support since 1985, Diane is the author of several books and video training CDs and online training classes for Microsoft Outlook. You can find her helping people online in Outlook Forums as well as in the Microsoft Answers and TechNet forums.