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How to Open Large MBOX file in Chrome on Mac & Windows?

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Published By Jamie Kaler 
Rollins Duke
Approved By Rollins Duke
Published On July 19th, 2024
Reading Time 7 Min Read
Summary: Do you have a MBOX file, and you want to know how to open MBOX file in Chrome on Mac & Windows machines? If yes, then you are on the right page. In this write-up, we are going to provide complete information and step-by-step guide for opening multiple MBOX files in bulk.

As we know, the MBOX file format is used to contain email information including header and body details. Multiple email clients support this format like Thunderbird, SeaMonkey, Apple Mail, Entourage, Eudora Mail, Google Takeout, etc, and tools to open large MBOX files in Chrome and Mac OS.

I have some MBOX files without any extension. These MBOX files are from the backup of my old Thunderbird account. Currently, I have another account configured in my Thunderbird.

I want to read the information written in these orphaned MBOX files. To reduce any data complexity, I do not want to import it to Thunderbird open MBOX file. Hence, I think of opening it in Chrome Web Browser.”

Why My MBOX File is Not Opening?

If you are unable to access your file, then there are some reasons. Some of the common problems are given below:

  • Missing or Corrupt File: Verify your file whether it’s corrupted or not, because it might happen during the transfer or moving the file.
  • File Extension: Sometimes happens when we have an incorrect or hidden extension file, so verify that the files are with .mbox extension.
  • Supported Mail Client: Not all email clients support the MBOX format, so open your file with the right email service.
  • Open Large MBOX File: If you have a large size of the file, then definitely you are unable to access the files.

Variations of MBOX Files

There are multiple variations are available in the MBOX file. Some of them are given below:

  • MBOXO: It is mainly supported by the Eudora email client to store messages as attachments. That is not a standard MBOX format. Its meaning or usage varies based on context, but it might involve archiving sent messages.
  • MBOXRD: This variation is used to hold electronic mail messages, supported by Qmail, Thunderbird, and Netscape.
  • MBOXCL: Here mainly use headers to find the start of any message and emails are modified before being added. It is used by ‘System V’ mailboxes.
  • MBOXCL2: it is similar to MBOXCL and it’s not possible to change before a message is added to the MBOXCL2 mailbox file.

How to Open MBOX File on Mac & Windows?

Now come to the main point, how you can access or open multiple MBOX files easily. so here we are going to mentioned multiple methods to accomplish your task without wasting your time.

#1: Open Large MBOX File in Chrome

To access your file in chrome, you have to change it into HTML format, because only HTML format can open in any browser. So, to convert MBOX to HTML, we have to open MBOX file in Thunderbird account. Complete steps are given below:

  1. Launch Thunderbird.
  2. Create any new empty folder here.
  3. Choose the Tools >> ImportExportToolNG option.

    ImportExportToolNG

  4. Select “Import MBOX” from the list.
  5. Choose the Import One or More MBOX Files icon.

    Import One or More MBOX

  6. Browse the MBOX file and open it here.

    Browse the MBOX

After uploading your file, now we will change it into HTML format to open MBOX file in Chrome on Mac & Windows.

  1. Again, start the email service.
  2. Right-click on uploaded MBOX.
  3. Choose ImportExportNG >> Export MBOX File.
  4. Select HTML Format.
  5. Browse the path to save the file.
  6. Lastly, click on the Export button.

And your file will be saved in HTML format. Now you can easily open MBOX file in chrome on Mac & Windows OS easily. Right-click on your changed file and choose Open With and your desired browser.

#2: Open MBOX File in Mac OS

If you have your MBOX file on your Mac machine, then you can use the Apple Mail email service. Because only Apple Mail is an email client for Mac machines, which supports the MBOX format. All the steps are given in detail:

  1. Open your Apple Mail.
  2. Choose File >> Import Mailboxes option.

    Import Mailboxes to open MBOX File

  3. Select the Files in MBOX format >> Continue.

    Files in MBOX

  4. Browse the MBOX file to upload it.

    MBOX file

  5. Lastly, click on the Done button.

    Done

This is the only way to open MBOX file on Mac machine. And given methods have some drawbacks, which are mentioned below in detail:

Why Manual Methods are Not First Priority of Users?

  • Thunderbird and Apple Mail must be installed on your system.
  • For Mac Mail, you have to purchase a subscribed account.
  • And also, you can’t open multiple MBOX files in chrome and Mac machines at once.

If you want to open large MBOX file in bulk, then you should use Free MBOX Viewer by RecoveryTools. And it is independent and standalone utility, so there is no need to install any third party tool.

Free Way to Open Large MBOX Files in Bulk

Download and install the Free MBOX Opener for Mac & Windows machines. It is completely free and there are no hidden charges, you can use it for free to open MBOX files in Chrome on Mac in bulk.

It supports all types of MBOX files exported from any email client. And there are no file size limitations to opening MBOX files.

How to Open MBOX Files on Mac & Windows?

  • Step 1: Install and start the solution.
  • Step 2: Add your files using Open button.
  • Step 3: All the folders/subfolders will show.
  • Step 4: Click on any email for analyzation.
  • Step 5: Search specific email with Search icon.
  • Step 6: Also, you can view attachments.

Why Free Solution Over Manual Method?

Because it is free and provides multiple advanced features like:

  • Open Icon: Users can easily upload multiple files and folders to the panel using the Open button from the top corner.
  • All Folders/Subfolders: This solution analyse and load all the folders and subfolders on the panel, so that users can see the structure and data.
  • Advanced Search Option: This option helps users to find any particular email to open and analyse the data by applying multiple filters.
  • Emails with Attachments: Also, it will show all embedded attachments with emails with any extension.
  • No Limitations: And users can open multiple and large MBOX files at once without having any file size limitations.

How to Open MBOX Files in Chrome: Default Locations

open mbox files with locations

Final Words

This article is a perfect tutorial for users who want to learn how to open MBOX files in Chrome on Mac & Windows machines. Users can access orphaned MBOX files as well as MBOX files without an extension in Chrome. Here we have mentioned all methods to open large MBOX file in chrome on Mac and Windows machines easily. users can choose the desired method, which choose their requirements best.