p7mViewer 3.0


p7mViewer 3.0 is a standalone application designed to view files and e-mail messages encrypted and/or signed in compliance with S/MIME standard.

  • Displays html and plain-text content of .p7m messages.
  • Extracts .p7m files' attachments.
  • Verifies and displays message security.
  • Integrates with Windows Shell
  • Windows Address Book support
  • CryptoAPI support

Message Security

  • Handles typical and sophisticated (multiple security-layer, multiple signatures) S/MIME files.  
  • Security information summary for typical .p7m files in main window
  • Detailed on-demand information on security structure of a .p7m. file.
  • Detailed security information for each security layer.
  • Security information of not-decrypted files (for each decrypted layer or decrypted-contained layer).


  • Displays and extracts files with their folder structure (if folder information is present).
  • Displays detailed information on attached files and folders.
  • Handles .p7m files nested as secure folders.
    Reading signed email in a web mail client
    Viewing encrypted email attachments
    Viewing encrypted mail in OWA without SOWA installed
    Exploring .p7m files
    Viewing corrupt SMIME emails
    Opening smime.p7m files

    Windows integration

  • Capable of updating Windows® Address Book based on information found in signatures of signed files.
  • Utilizes CryptoAPI for cryptographic services, which gives access to certificates installed on the system, security providers, cryptographic algorithms and devices  
  • Drag&drop attachments extraction
  • .p7m files' context menu for easy attachments extraction


  • Handles arbitrarily large files
  • Handles multiple security layers
  • Very low memory usage during attachment extraction in no-window mode  
  • Displays as much content of broken (e.g. incompletely retrieved) files as possible  


  • Windows supplied cryptography (CryptoAPI)  
  • Smartcard support through CSP (requires software supplied by the smartcard manufacturer installed)  


  • Flexible licensing schemes  
  • 30-day free trial license  

    Back to the main page...

    Copyright © ppuVAS 2001-2004Last modified on  25 Sep 2004
    PL-92306 Lodz, ul. Szafera 6office@ppuvas.com.pl