I am looking for a mbox viewer on OS X. It should

  • run natively on OS X 10.9
  • be able to view and search large mbox files (>10000 messages) efficiently
  • display and preserve all information present in the mbox file.

It would also be nice if it could let GPGTools decrypt encrypted messages.

Any suggestions? (It doesn't have to be free.)

  • It's still early, but you might try Mailpile. Last time I tried it I could import an mbox file and search it. Commented Sep 1, 2014 at 21:55
  • @GregHewgill Mailpile has an appealing design, but so far Thunderbird does the job for me.
    – ben
    Commented Sep 2, 2014 at 0:29

1 Answer 1


You can use Thunderbird with the ImportExportTools extension:

  • Free, open source, Windows/LinuxMac
  • ImportExportTools can import mbox files

enter image description here

enter image description here

From a review:

ImportExportTools worked flawlessly, importing my 350 Eudora v7.1 mailboxes (with 117k emails) into Thunderbird 3.0 on a Windows 7 machine.

(FYI: MBox Viewer for large files on Windows)

  • 1
    Very nice add-on. Perfectly suited for my needs. Decryption of PGP protected messages is possible as well.
    – ben
    Commented Sep 2, 2014 at 0:27
  • @ben Good to know about the decryption of PGP protected messages, I hadn't tried that. Commented Sep 2, 2014 at 0:30

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.