I'm looking for a free or open source software able to convert Gmail MBOX email archives to Outlook PST archives.
It can be a Windows 10 or MacOS X software, I'm also open to x86/x64 Linux command line tools.

Thank you.

  • 1
    Maybe try the manual method described here, using Thunderbird: easytechtools.com/2016/09/28/mbox-to-pst-file-conversion Commented May 4, 2018 at 18:12
  • Interesting method, it would be nice to have a simpler method to convert it though.
    – Chris
    Commented May 15, 2018 at 8:28
  • There are multiple software available to convert Gmail email archive MBOX file to PST file, but no free tool available. If you want to convert MBOX archive to PST archive in Windows 10 so you can try this tool- https://datahelpsoftware.com/mbox/pst/. The demo is available free of cost.
    – V Torrence
    Commented Dec 26, 2018 at 7:05

2 Answers 2


There is a free Convert MBOX to PST utility available for Windows and Outlook. Please note that I'm one of the developers of this tool.

  • Interesting tool, easy to use.
    – Chris
    Commented May 21, 2018 at 15:50

Follow these steps to convert Gmail MBOX to Outlook:

  1. Create a Gmail for connecting to Outlook
  2. Add your Gmail account to Outlook
  3. Copy and paste your Gmail messages to your desktop
  4. Copy your Gmail to your Office 365 mailbox
  5. Remove your Gmail account from Outlook

Visit this MS link for more information: Import Gmail to Outlook

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