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).
Attachments
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.
Typical use cases
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
Performance
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
Cryptography
Windows supplied cryptography (CryptoAPI)
Smartcard support through CSP (requires software supplied by the smartcard manufacturer installed)