HomemiscellaneousBest Methods to Import MBOX to Outlook 2021, 2019, 2016, and 2013

Best Methods to Import MBOX to Outlook 2021, 2019, 2016, and 2013

If you’re switching from email clients like Thunderbird, Apple Mail, or Eudora to Microsoft Outlook, you’ve probably encountered the challenge of dealing with MBOX files. Microsoft Outlook (versions 2021, 2019, 2016, and 2013) does not natively support the MBOX format, making it necessary to find an effective workaround.

In this blog, we’ll explore the best methods to import MBOX to Outlook — both manually and using specialized tools. Whether you’re a tech-savvy user or prefer a simpler solution, there’s an option here for you.

What Is an MBOX File?

An MBOX (Mailbox) file is a widely-used email storage format used by email clients like:

  • Mozilla Thunderbird
  • Apple Mail
  • Eudora
  • Entourage
  • Opera Mail

It stores all email messages in a single file. Unfortunately, Outlook doesn’t support MBOX, which uses the PST (Personal Storage Table) format instead.

Method 1: Convert MBOX to Outlook Using a Third-Party Tool (Recommended)

This is the fastest, most reliable, and error-free way to import MBOX to any version of Outlook (2021/2019/2016/2013).

Steps:

  1. Download a Professional Converter Tool
    • Popular choices:
      • SysTools MBOX to Outlook Converter
      • Stellar Converter for MBOX
      • Kernel for MBOX to PST
  2. Install and Launch the Tool
    • Add one or multiple MBOX files.
  3. Preview Your Emails (Optional)
    • Most tools allow you to view email contents before conversion.
  4. Choose Output Format: PST
    • Select PST format and set a destination folder.
  5. Import the Converted PST File into Outlook
    • Open Outlook > Go to File > Open & Export > Open Outlook Data File
    • Select your PST file to access the imported emails.

Pros:

  • Preserves folder structure, attachments, metadata
  • Handles bulk MBOX files
  • Supports all Outlook versions
  • Quick and user-friendly

Cons:

  • Paid software (usually one-time fee)

Method 2: Free Manual Method Using Thunderbird and Outlook

This method is suitable if you’re only importing a small number of emails and prefer a no-cost option. It requires using Mozilla Thunderbird and Outlook together.

Steps:

Step 1: Import MBOX into Thunderbird

  1. Install Mozilla Thunderbird.
  2. Install the ImportExportTools NG extension.
  3. Right-click Local Folders > ImportExportTools NG > Import MBOX File.
  4. Select and import your MBOX file.

Step 2: Export Emails from Thunderbird as EML Files

  1. Select all emails (Ctrl+A) from the imported folder.
  2. Right-click and select Save selected messages > EML format.

Step 3: Import EML Files into Outlook

  1. Open Outlook.
  2. Create a new folder in your Outlook account.
  3. Drag and drop the saved .eml files into the new Outlook folder.

Pros:

  • Free
  • No software purchase needed

Cons:

  • Time-consuming
  • Only suitable for small mailboxes
  • Metadata and folder hierarchy may not be preserved

Method 3: Use Apple Mail + Outlook on Mac (For macOS Users)

If you’re using Apple Mail on a Mac and want to move to Outlook for Mac:

Steps:

  1. Open Apple Mail and export MBOX files.
  2. Use a conversion tool like Gladwev MBOX to PST Converter for Mac.
  3. Convert the MBOX files to PST.
  4. Move the PST to a Windows PC if needed.
  5. Open PST in Outlook via File > Open & Export > Open Outlook Data File.

Pros:

  • Good for Mac to Windows transfers
  • Maintains data integrity

Cons:

  • Requires a Mac
  • Involves multiple steps

Final Thoughts

When it comes to importing MBOX to Outlook 2021, 2019, 2016, or 2013, your choice depends on:

  • The amount of data you need to move
  • Your technical comfort level
  • Whether you prefer free or paid solutions

For a hassle-free, accurate, and complete migration, third-party converter tools are the best option. However, if you’re okay with some manual effort and a small mailbox, the free method using Thunderbird and Outlook also works well.

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