PST to MBOX Converter · Mail

Open OST File to HTML Tool

Free · In‑App Purchases

Open any PST or OST file without Outlook and convert your mail to MBOX, PDF or HTML. See what is inside, then export it. 100% Offline PST Converter Tool. Need to move an Outlook PST or OST mailbox somewhere else? PST to MBOX Converter opens your Outlook data file directly, with no Outlook and no Exchange server needed, and converts your mail to MBOX, PDF, or HTML, right on your Mac, iPhone, and iPad. Pick your file, see exactly what is inside, then convert it to the format you need. WHAT YOU CAN DO • Open any .pst or .ost file without Outlook or an Exchange server • See a clear breakdown before you convert: how many folders, messages, and attachments it holds • Convert to MBOX, ready for Apple Mail, Thunderbird, and other mail apps • Save your mail as a PDF, or as a browsable HTML archive • Keep the original folder structure, or flatten it, and skip duplicate messages • Split a large mailbox into parts to fit import size limits OUTPUT FORMATS • MBOX, ready to import into Apple Mail, Thunderbird, and other mail apps • PDF, a clean, printable copy of your mailbox • HTML, a browsable archive you can open in any web browser BUILT RIGHT • Runs on Mac, iPhone, and iPad • Everything happens on your device. Your mailbox never leaves it • No account, no sign in, nothing is uploaded • Handles large, multi gigabyte files • Fast, reliable, and faithful to the original PERFECT FOR • Moving an Outlook PST or OST mailbox to Apple Mail, Thunderbird, or another app • Converting a PST or OST to MBOX when you do not have Outlook • Saving or archiving an old mailbox as a PDF or HTML PST to MBOX Converter is an independent app and is not affiliated with, endorsed by, or sponsored by any email software vendor. PST, OST, and Outlook are referenced only to indicate the file formats the app works with. Privacy Policy: https://rush.tools/privacy Terms of Use: https://rush.tools/terms

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Rush Tools LLC, 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

    Accessibility

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

    Information

    Seller
    • RUSH TOOLS LLC
    Size
    • 24.1 MB
    Category
    • Productivity
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 RUSH TOOLS LLC.
  • Developer Website
  • Privacy Policy
  • License Agreement

    • More by Rush Tools LLC