Mbox Splitter is a small application that can split a standard Unix mbox file or a mbox package export by Apple Mail using the "Export Mailbox" feature, into single messages in eml format. Now, in option as an In-App Purchase, the user has an option to view and export the resulting messages.

What's New

Version 2.5.2

Now shows the percentage on the progress bar. Now it checks if the user tries to open Mbox files contained in /Library/mail/. Those are in a different format and cannot be opened. Bug fixes.

Ratings and Reviews

Does what is says. Great customer support from author


I ran into an issue when first using this and contacted the author via email. I received fast and helpful support to understand and address my issue. Happy with the program and what is does and even more pleased with the excellent customer service I received.

Does what it says and fast!

Dog Ranger

I downloaded a large (5.12gb) archive of my gmail from the past ten years. I wanted to clean up my mailbox without losing important information. After searching the internet, all the solutions were slow, tedious or involved expensive programs ($50-$100) that seemed too much for what would be, in my case, a single use. I wasn’t sure if Mbox Splitter would work and emailed the developer who responded in less than a half-hour. That impressed me enough to spend 99 cents.

End result: I pointed Mbox splitter at the mbox file I downloaded from gmail (not Apple Mail in this case) and it took three and a half minutes to split about 22,000 emails. They are all now in folders in easy to read and search .eml format and attachments are there in labelled sub-folders. They are grouped by date with folders for the year and subfolders for month and day of the month.

Very simple to use and quite the bargain. Thank you!

A great tool


I had been looking for this forever. I know lots of people just use gmail and leave all their emails on a server forever, but I would rather clean things out and have a local copy. This is a great way to take the files from Mail and just archive it into a format that is organized and accessible. It’s simple but does the job well.
Even though I gave it 5 stars there’s always room for improvement i guess right? My only request would be ; a preference pane with simple options to personalize how the date is formated and whether things like Sender / Recipient / Subject are included.


Alfonso Maria Tesauro
4.7 MB
Age Rating
Rated 4+
Copyright © 2018 Alfonso Tesauro. All rights reserved.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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