We stand with Ukraine to help keep people safe. Join us
MBOX Breaker
MBOX Breaker
MBOX Breaker free download for Mac

MBOX Breaker

Version 1.1

Split your existing mailbox into smaller files.

MBOX Breaker overview

MBOX Breaker splits your large mailboxes into smaller ones. Apple Mail, for instance, has a 1 GB limit on the size of .mbox files it will let you import, so MBOX Breaker could split your existing mailbox into smaller files that can be successfully imported. If you used a program like O2M to convert your Outlook PC mailbox into a Mac-friendly format, MBOX Breaker can split any oversized .MBOX files in order to maintain compatibility with programs like Apple Mail. MBOX Breaker works with all types of .MBOX files, even those on Unix systems. The trial version will only process 1 MB of your MBOX file. The licensed version allows for complete customization. Compatible with OS X 10.6-10.10+.

What’s new in version 1.1

Updated on Oct 10 2018

Version 1.1:
  • Added MBOX file repair capability
  • Simplified, code-signed installer
  • Minor bug fixes





3.7 MB

Developer’s website




App requirements

  • Intel 64
  • Intel 32
  • Mac OS X 10.6 or later
  • Download contains a version for OS X 10.5, Intel64/Intel32/PPC32
Try our new feature and write a detailed review about MBOX Breaker. All reviews will be posted soon.

Write your thoughts in our old-fashioned comment

MacUpdate Comment Policy. We strongly recommend leaving comments, however comments with abusive words, bullying, personal attacks of any type will be moderated.

(0 Reviews of )

There are no reviews yet
  • Comments

  • User Ratings

Help the community
There are no reviews yet, be the first to leave one
Help the community
There are no ratings yet, be the first to leave one
How would you rate MBOX Breaker?