ClipSeal

Open P7M files and attachments

Only for Mac

Free

Mac

Open P7M files and S/MIME attachments from your Mac’s menu bar. Copy a supported attachment in Mail, Outlook or Finder, or choose a file manually. ClipSeal extracts the documents and displays them in a floating document shelf. • Preview documents with Quick Look. • Open files in their default apps. • Save copies or drag them into another app or folder. • Check digital signatures and certificate trust. • Extract encrypted containers when a matching private key is available in your macOS Keychain. • Choose your preferred shelf corner and enable or disable clipboard watching. Documents are extracted locally on your Mac. Signature and certificate checks may require network access. Original files remain unchanged. Extracted documents are temporary working copies. Save or export anything you want to keep before closing its tile, clearing the shelf or quitting ClipSeal. ClipSeal is free, with no subscriptions or in-app purchases.

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* Opening at login now passes through the new recovery-aware flow.

The developer, app.limit, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    app.limit UG (haftungsbeschrankt)
    Size
    1.5 MB
    Category
    Utilities
    Compatibility
    Requires macOS 15.4 or later.
    • Mac
      Requires macOS 15.4 or later.
    Age Rating
    4+
    Copyright
    © 2026 app.limit UG