How to Convert MSG to MBOX with Complete Email Items?

Rollins Duke   
Published: April 24th, 2024 • 8 Min Read

Nowadays a lot of home and working professionals want to convert MSG to MBOX file due to various reasons. The main cause to convert Outlook MSG to MBOX format is that MBOX format is compatible with several email clients such as Thunderbird, Apple Mail, SeaMonkey, Eudora, Opera Mail, etc.

This blog post explains the 2 best methods to convert .msg files into .mbox extensions. But before starting the step-by-step process, first, know little about MSG and MBOX extensions, and why conversion is necessary.

5 Simple Steps to Convert Outlook MSG to MBOX

  • Step 1: Install and run MSG to MBOX Tool.
  • Step 2: Add Outlook MSG files to software.
  • Step 3: Select required MSG files and Next.
  • Step 4: Pick MBOX and set destination path.
  • Step 5: Click Convert to convert MSG to MBOX.

Know MSG and MBOX Extensions

MSG file extension is used to save Outlook items such as emails, contacts, calendars, tasks, notes, journals, etc. An MSG file can store only a single Outlook item including embedded attachments and components.

While MBOX is a standard file extension to store each email folder including all emails. Multiple emails client including Thunderbird, Apple Mail, SeaMonkey, and Eudora Mail allow to import and export of email folders into the MBOX file extension.

Recommended: Steps to Convert MSG Contacts to CSV File

Why Do Users Convert MSG to MBOX Format?

  • Cross-Platform Compatibility: MSG is a native file extension of Outlook hence this is only supported by Microsoft Outlook email clients. While sometimes users want to view MSG files under different email clients that support MBOX file extension.
  • Supports Freeware Clients: Users have desired to convert .msg to .mbox file because the MBOX extension can be easily imported into multiple freeware email clients i.e., Mac Mail, and Thunderbird. While Microsoft Outlook is a part of MS Office Suite programs which is a paid application.
  • Simplified Email Archiving: MBOX mailbox format allows you to consolidate multiple emails into a single file, making email archiving and storage more organized and efficient. This is particularly useful for managing large volumes of emails.
  • Easier Backup and Restoration: MBOX files are easy to back up and restore, making it convenient to safeguard your email data against data loss or system failures.
  • Long-Term Accessibility: MBOX format is less prone to compatibility issues over time, ensuring that you can access and retrieve your email data even in the future.

Recommended: Quick Guide to Batch Convert MSG to HTML

Manual Way to Convert MSG Files to MBOX

  1. Go to the source location where MSG files are stored on your computer.
  2. Select an MSG file and right-click and choose Open with >> Outlook.
  3. Now choose File >> Save As option.
  4. Select the saving type as TXT and save it.
  5. Thereafter, rename the TXT file as EML.
  6. Use a manual way to import EML to Thunderbird.
  7. Now export MBOX file from Thunderbird manually.
  8. MSG to MBOX conversion process completed successfully.

Limitations of Manual Technique

  • Above we have explained only the main steps to convert Outlook MSG to MBOX, but this is a lengthy and complex task.
  • This technique alters your email formatting and visibility, as first, we need to convert MSG to TXT and then rename it as EML.
  • If you want to perform MSG to MBOX conversion task, then this is mandatory to have technical knowledge about email clients and the import/ export process.
  • The manual method loses email attachments, hyperlinks, and some other components during the conversion.
  • This technique is capable to convert emails one by one, so you need to repeat the same steps multiple times.

Read Similar: Tool to Convert MSG to PDF with Attachments

Automated Software to Convert Outlook MSG to MBOX

MSG File Converter Tool is an all-in-one offline software that has the capability to convert .msg to .mbox files. The tool is also known as MSG to MBOX Converter. All the latest Microsoft Windows and Mac OS users can download and install on their computers. Thereafter, follow the below-mentioned steps for completion of the task.

How to Convert MSG to MBOX in Bulk?

  1. Launch MSG to MBOX Converter on your Windows and Mac computers. Upload MSG files in the software GUI using Select Files or Select Folders button.
    start msg to mbox converter
  2. Thereafter, choose the required MSG files/ folders from the software panel and hit on the Next button.
    select files and folders
  3. Now select MBOX as a saving option according to the need.
    select mbox as saving option
  4. After that, the software will automatically choose the desktop as the destination path. However, users can click on the Browse icon to change different destination path.
    convert msg to mbox
  5. Click on the Convert button to start the process to convert MSG to MBOX file and wait for a few seconds.
    convert outlook msg to mbox
  6. MSG to MBOX Conversion process has been completed successfully. Now you can see the flash message of completion.
    conversion completed
  7. Lastly, it will open the destination path. Hence, users can easily get the resultant MBOX file.
    resultant mbox file

Note: Follow the above-mentioned steps to convert Outlook MSG to MBOX format. The upcoming section explains the 3 different choices to access the converted MBOX file. Let’s enjoy!

What to Do with Resultant MBOX?

After completing the process to convert MSG files to an MBOX file, users can easily access the resultant MBOX file using several free email clients and applications. Let’s know how?

#1 Choice: Import MBOX in Thunderbird

  1. First, add ImportExportTools NG Add-ons to the Thunderbird email client.
  2. Thereafter, choose Tools >> ImportExportTools >> Import MBOX File option.
    import option
  3. Now, browse the resultant MBOX file from the destination path and import it.
  4. Restart the Thunderbird email client and view imported mailbox items.

#2 Choice: Import MBOX in Apple Mail

  1. Start the Apple Mail email client and choose File >> Import Mailboxes.
  2. Either choose Apple Mail or Files in MBOX format option and press Continue.
    files in mbox format
  3. After that, browse the converted MBOX file and hit on Continue.
  4. Complete the import process and restart the Apple Mail email client.

#3 Choice: Use Free MBOX Viewer Software

  1. Download the mentioned freeware software on your pc.
  2. Run this application and choose Add Files or Add Folders.
  3. Browse the resultant MBOX file and insert it into the software GUI.
  4. Thereafter, click on the MBOX file and read the complete details.

MSG to MBOX Converter Features and Benefits

  • Batch Convert MSG to MBOX file including complete email items and components such as To, Cc, Bcc, From, Date, Time, Year, Subject, Signature, Body, Hyperlinks, Inline Images, and all.
  • Convert Outlook MSG to MBOX standard file extension. Which is compatible with several email clients such as Thunderbird, Mac Mail, SeaMonkey, Eudora, Opera Mail, Postbox, etc.
  • Best tool that preserves complete message attachments during the conversion process such as Adobe PDF, Word Documents, PowerPoint Presentations, Excel Spreadsheets, Images, etc.
  • This Software can be operable on all the latest Windows and Mac OS. Hence, all computer and MacBook users can use it without showing any error or warning message.
Why Is Converting MSG to MBOX Online Not Advisable?

Emails store users’ crucial data including personal, professional, and financial. Even sometimes emails have important attachments such as identity cards, government-assigned documents, bank statements, photos, and videos. Thus, this is not advisable to upload your valuable data on a third-party server. Online MSG to MBOX Converter applications say to upload your MSG files on the web and then convert them into MBOX files.

Drawbacks of Online Software
  • Online tools use an active internet connection for converting MSG files to MBOX. Hence, these applications work slowly during the completion of the conversion process.
  • Several online tools allow converting .msg to .mbox free of cost. But these tools show multiple advertisements and harmful malware links. Hence, your one mistake may be the cause of a malware attack on your pc.
  • Online MSG to MBOX Converter uploads your MSG files on the web to start the conversion process. But this is not advisable to upload your crucial data on WWW (World Wide Web). Your data may be leaked or misused.

We have discussed the 2 best methods to convert MSG to MBOX file as well as 3 ways to access the resultant MBOX file. This task becomes necessary due to the urgent work requirements. Hence, users search for MSG to MBOX Converter offline and online tools. However, experts always recommend offline secure software for resolving the query with 100% accuracy.

Read Similar: 2 Best Methods to Open MSG File in Gmail