You don't send your private mail on postcards, so why are you sending your email messages without envelope v1.0?


Protect your email privacy! Envelope v1.0 encrypts your email messages so that only the intended recipient can read them. Without encryption your email messages are sent over the Internet like postcards which can be read by anyone. Protect yourself from eavesdropping business competitors, snooping employers, rabid marketing agencies and big brother governments by encrypting your email messages with envelope v1.0.


Encrypt and decrypt your email messages with a single mouse click.

Send and receive encrypted voice messages via email.

The envelope v1.0 floating toolbar is visible in your Eudora application


The envelope v1.0 application seamlessly integrates the powerful encryption functions of MacPGP 2.6.3 with any version of the Eudora email application. A floating toolbar provides single mouse click access to encrypting and decrypting messages, adding and mailing public keys, and recording and playing encrypted voice messages. The envelope v1.0 application simplifies managing your public keys with a graphical key ring viewer and editor. In addition, envelope v1.0 supports drag and drop encryption and decryption of files.


Download a free demonstration version of envelope v1.0

A free fully-functional 30-day demonstration version of envelope v1.0 is available for download. To use envelope v1.0, you will need MacPGP 2.6.3 and either a shareware or commercial version of the Eudora email application. You can obtain all of the necessary software from our download page.


Features - with a single mouse click you can:

  • Sign and encrypt all of your outgoing email messages
  • Decrypt and verify signatures of all your incoming email messages
  • Append the text of your public key to your email messages
  • Add a public key contained in an email message to your key ring
  • Record, encrypt and attach voice messages to your email
  • Decrypt and play voice messages attached to your email
  • Use drag and drop to encrypt and decrypt files

System Requirements

  • Mac OS based computer with 68020 processor or higher, Power Macintosh or Power PC based computer
  • System 7.1 or later
  • 2.5 MB of available memory (RAM) to run envelope v1.0
  • 1.2 MB of disk space to install envelope v1.0
  • Microphone/Speakers for recording and playing voice messages
  • Any freeware or commercial version of Eudora (1.5.4 or higher, including Eudora Pro 3.0)
  • MacPGP 2.6.3

envelope v1.0 was featured as a Hot Mac Product

Momentum Technologies LLC

©1995-2012 All Rights Reserved

envelope and envelope v1.0 are registered trademarks of Momentum Technologies LLC
PGP is a registered trademark of Philip Zimmermann at PGP, Inc.
RSA is a registered trademark of
RSA Data Security, Inc.
Eudora is a registered trademark of
Qualcomm, Inc.