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Convert MBOX File Online
Convert MBOX File
Stellar® Online MBOX Converter

Free MBOX to PST Converter Online

Convert Apple Mail, Google Takeout & 15 other MBOX files to PST for FREE

Upload to Convert Your MBOX File

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Secure & Private: Protected by Privacy Policy

  • Files Converted
    100K+ Files Converted
    Successfully converted 100K+ files, including Apple Mail and Google Takeout.
  • Convert within
    Convert within 15 Mins
    Usually takes less than 15 minutes to convert any file
  • No Installation
    No InstallationRequired
    No Software installation required.

Convert unlimited files-no size limit with Desktop Software

Common MBOX to PST Conversion Scenarios

Switching To Outlook

When you switch from Thunderbird or Apple Mail to Outlook, your MBOX file format isn't supported and can't be opened by Outlook directly.

Switching To Outlook

Mac To Windows

When you move from Mac to Windows, your Apple Mail file won't open in Outlook, since Outlook only reads the PST file format.

Mac To Windows

Export Gmail to Outlook

When Google Takeout exports your Gmail account as an MBOX file, that file can't be imported into Outlook without converting it to PST format.

Export Gmail to Outlook

Convert your MBOX File in just 3 Steps

Upload MBOX File
1

Upload MBOX File

Select and upload your MBOX file securely, right from your browser.

Convert MBOX To PST
2

Convert MBOX To PST

Convert MBOX to PST format quickly while preserving your complete folder structure.

Preview & Download
3

Preview & Download

Preview your converted PST file, and download it directly to your computer.

Precisely Convert MBOX File & Retain All Mailbox Items

Seamless & Accurate MBOX to PST Conversion

Stellar Online MBOX Converter handles complete mailbox conversion from Thunderbird, Google Takeout, Apple Mail, Evolution, Eudora, Entourage, Netscape Mail, SeaMonkey, Mutt, Cone, Claws Mail, Opera Mail, Sylpheed, Mozilla Mail, Spicebird, PocoMail, Mulberry, and GNU Mail. It accurately converts emails and attachments into PST format while preserving the original folder hierarchy. Preview the mailbox structure and message count in your browser before saving the converted PST file.

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Convert MBOX File Sign In & Upload upto 5GB
Try Desktop Edition No Size & File Limits

Why People Use Online MBOX to PST Converter

Convert MBOX files online with privacy, convenience, and progress visibility built into the workflow.

Free Conversion Available

Free Conversion Available

Convert <=100 MB MBOX file into PST format at no cost.

No Microsoft Outlook Requirede

No Microsoft Outlook Required

Convert MBOX to PST easily without the need for Outlook installation.

No Software Installation Needed

No Software Installation Needed

Convert MBOX files directly online - no need to download or install a Software.

Real-Time Progress Tracking

Real-Time Progress Tracking

Track MBOX upload, conversion, and download progress on files in real-time.

No Data Retention For User Privacy

No Data Retention For User Privacy

Strict compliance with privacy regulations as MBOX data is deleted after conversion.

No Original Email Client Required

No Original Email Client Required

Perform MBOX file conversion without needing the original email client.

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Convert MBOX File Sign In & Upload upto 5GB
Try Desktop Edition No Size & File Limits

Compare Plans and Pricing

Upgrade to Premium anytime to convert larger Mbox files.

ONLINE SERVICE
DESKTOP SOFTWARE
ONLINE SERVICE
Free
$0
Convert Mbox File

No Credit Card Required

  • File size limit less than 100 MB.
    Convert MBOX files to PST online up to 100 MB at no cost. The Free plan is ideal for users who want to convert a small MBOX file to Outlook PST quickly and securely.
  • Convert single file for Free.
    The Free plan lets you convert one MBOX file to PST. Experience the MBOX to PST Converter Online before upgrading for larger or multiple mailbox conversions.
  • Preview data in HTML format.
    Preview your converted mailbox in HTML format before downloading. Verify folders, emails, attachments, and mailbox structure to ensure your MBOX to PST conversion is accurate.
  • Download the converted file within 24 hr.
    Your converted PST file remains available for download for 24 hours. After that, it is permanently deleted from our servers to ensure complete privacy and data security.
Best Value
Premium
$19.99
Upgrade Now

Secure Online Transaction

  • File Size limit is upto 5 GB.
    Convert MBOX files up to 5 GB with the Premium plan. Perfect for larger mailboxes requiring a fast, secure, and reliable MBOX to PST conversion online.
  • Convert up to 5 Files at $19.99.
    Convert up to five MBOX files to PST for just $19.99. Ideal for users migrating multiple mailboxes to Microsoft Outlook without installing desktop Service.
  • Preview available in HTML format.
    Preview your converted mailbox in HTML format before downloading the PST file. Verify email folders, messages, and attachments for accurate MBOX to Outlook conversion.
  • Download the converted file within 48 hr.
    Your converted PST files remain securely available for 48 hours. Download them before they are automatically deleted from our servers to maintain privacy.
DESKTOP SOFTWARE
Corporate Edition
$39
Try Desktop Edition

Free Preview & Save

  • No File Size limit.
    Convert MBOX files of any size to PST without limitations using the Stellar MBOX to PST Converter Corporate Edition. Best suited for IT administrators, businesses, and professionals handling large mailboxes.
  • Convert Unlimited Files.
    The Corporate Editionallows you to convert up to five MBOX files with no file size restriction, offering faster processing and complete flexibility for enterprise mailbox migration.
  • Converted File available on your system forever.
    Your converted PST files are saved directly to your computer and remain accessible indefinitely. No download expiry, cloud storage limitation, or time restriction applies.

FAQs

We have answers to the most common questions that our users ask.

How can I convert an MBOX file to PST online?

You can convert an MBOX file to PST online in three simple steps. Upload your MBOX file, preview the converted mailbox in HTML format, and download the PST file after the conversion is complete. The Stellar online MBOX to PST Converter securely converts your mailbox while preserving emails, attachments, folder hierarchy, metadata, and other mailbox properties. No software installation is required.
Yes. Stellar Online MBOX to PST Converter allows you to convert one MBOX file up to 100 MB for free. You can preview the converted mailbox before downloading the PST file. For larger MBOX files (up to 5 GB) upgrade to Premium.
You can convert maximum 5 GB size of your MBOX files as supported by browser.
Yes, the online converter can handle MBOX files from older mail clients such as Eudora, Entourage, Netscape Mail, Spicebird, PocoMail, and Mulberry; it converts them into the PST format that is compatible with Outlook and retains all folders, emails, and attachments.
This Online MBOX to PST converter supports standard MBOX files created by popular email clients, including Mozilla Thunderbird, Apple Mail, Google Takeout (Gmail), Eudora, Entourage, SeaMonkey, Opera Mail, Postbox, Spicebird, PocoMail, Claws Mail, and Mulberry. Any application that exports mailbox data in the standard MBOX format is generally supported.
Yes. You can upload Mozilla Thunderbird MBOX files directly using this free online MBOX to PST converter service. The service converts Thunderbird mailboxes into Outlook-compatible PST files while preserving emails, attachments, folder structure, and mailbox metadata.
Yes. The online converter supports Apple Mail MBOX files and converts them into PST format for Microsoft Outlook. During the conversion, it preserves mailbox folders, email formatting, attachments, timestamps, and other mailbox properties.
Yes. If you've exported your Gmail mailbox using Google Takeout, simply upload the downloaded MBOX file to the Stellar online MBOX to PST converter. The service converts it into a PST file that can be imported into Microsoft Outlook.
Yes. You don't need Microsoft Outlook installed to convert MBOX to PST online. The conversion takes place securely on Stellar's cloud servers, so you only need a supported web browser to upload your MBOX file and download the converted PST file.
No. The Stellar online MBOX to PST converter works entirely in your web browser. There is no need to download or install any software. Simply upload your MBOX file, preview the converted mailbox, and download the PST file after the conversion is complete.
Once the conversion is complete, your converted PST file is available in your account for download. Free plan allow you to download within 24 hour and paid plan gives you 48 hours to download.
Yes. Before downloading the converted PST file, you can preview your mailbox in HTML format. This allows you to verify folders, email messages, attachments, and mailbox structure before downloading the converted file.
The conversion time depends on your MBOX file size and internet connection. Smaller mailboxes are usually processed within a few minutes, while larger MBOX files may require additional processing time.
Yes. The converter preserves the original folder hierarchy, email formatting, attachments, metadata, timestamps, sender and recipient information, and other mailbox properties. Your converted PST file closely matches the original MBOX mailbox.
Converting MBOX to PST lets you access mailbox data from Thunderbird, Apple Mail, Google Takeout, Eudora, SeaMonkey, Opera Mail, and other MBOX-based email clients in Microsoft Outlook. It is also useful for Outlook migration, mailbox backup, email archiving, and long-term mailbox management.
Yes. The Premium Plan converts 5 MBOX files at once and the Desktop Edition allow you to convert unlimited multiple MBOX files.
If the converted PST file appears empty, verify that the uploaded MBOX file contains mailbox data and is not incomplete or damaged. You can also preview the converted mailbox before downloading to confirm the conversion results. If the issue persists, contact Stellar Technical Support for further assistance.
If your MBOX file is corrupted or incomplete, the converter may not be able to process it accurately, and the resulting PST file could have missing or unreadable data. We recommend using a healthy backup where possible. If you suspect corruption, contact Stellar Technical Support for further assistance.
Yes, the online MBOX to PST converter can be used in any web browser on Mac, Windows, or Linux, without needing Outlook or Installation of any additional software.
Convert Large MBOX Files
Desktop Software

Convert MBOX Files to PST

  • No file size limit
  • Batch MBOX file conversion
  • Convert and save locally
  • Free technical support
Try Desktop Edition No Size & File Limits
Testimonial
"Stellar Converter for MBOX is a great product. It did just what it promised. Used product to convert Thunderbird to Outlook. Finding this product made them very happy."trust
Greg SmithJune 08, 2026

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