This app can be an extremely handy tool for mbox bundles exported by Apple Mail or any other program using the "Export Mailbox" features. While Apple Mail takes a significant amount of time exporting the mbox files, this app can open them for viewing in a fraction of a second. It is extremely useful when you have an archive of Apple Mail exported mboxes, because you will be able to open a file also of many gigabytes without any issue, and, as said, in a fraction of a second. Now compatible with mbox files not created by Apple Mail.

What’s New

Version 1.9

Minor fixes and improvements.

Ratings and Reviews

3.7 out of 5
3 Ratings

3 Ratings

billmccart ,

Great tool for MBOX archives!

I recently archived, as MBOX files, an old email account that I was accessing through Apple Mail. I need to be able to view the emails and also view and export their attachments. Fast MBOX Editor is a great tool for this. It opens MBOX files very quickly, and allows them to be sorted in different ways. The attachments to an email can be easily viewed or downloaded. It's not easy to find good MBOX tools that run on Macs so I was happy to find this one and happy that it worked so well and so simply. I also got a fast and helpful response when I sent the developer a question. Highly recommended!

EGFStech ,

Excellent Tool for Mbox Archives

I was looking for a quick/simple tool to view Mbox files that were archived from Google Mail using the 'Takeout' tool. My first attempt was with a 1.35GB Mbox file.

Fast Mbox Editor (FME) opened the Mbox in around 6 seconds and from there I was able to do all of the following quickly and simply...
- Scroll/Browse messages.
- SEARCH (an important one for me)
- View Attachments.
- EXPORT a searched/filter list of messages to a new Mbox file.
- Export individual message to EML.
- Export individual attachments.

I really don't know what else I could ask for in an Mbox VIEWING app.

PS. I see there is a one-star review, but I 'think' that person was actually looking to EDIT the email and would like to have a 'fully functional' email client app, without having the overhead of keeping all of the email in the email client app. For that I would suggest looking at as a full email client, Mbox opening alternative.

I did not want the overhead involved with using something like Thunderbird and I think Fast Mbox Editor is absolutely GREAT for what it is intended to do!

BulldozerShadow ,

Not Robust

I am looking for an mBox importer to organize 200GB Mac Mail. But the imports do not have hte photos, the editiing is entirely lost, and I cannot find a way to edit content. I wish there were an excellent program avaialble to hold and organzie old Mail and Notes data, as useful as the original applications they came from, or even better: way to store old content without having to access it every day.

App Privacy

The developer, Alfonso Maria Tesauro, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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