MBOX to Microsoft 365 Import Software
MBOX to Office 365 Migrator Software
MBOX to Office 365 Migrator imports MBOX, MBX and MBS files into Microsoft 365 mailboxes for many users together. Thunderbird, Apple Mail and Google Takeout files all qualify. Admin credentials do the work and users share no passwords.
- Bulk import of MBOX and legacy file types
- Archive mailbox and impersonation options
- Date filter and no duplicate mail
- Works on Windows 11, Windows 10 and Mac
- Free Demo2 user accounts
- 30 Day RefundDemo test comes first
- Card or PayPalHosted store checkout
- Fast License KeySent by email
- 24x7 SupportChat and email
1Is this my case?
Which Cases Need an MBOX Migration to the Cloud?
Find your case below. RecoveryTools software moves MBOX mail to user mailboxes without email clients.
- Thunderbird to Microsoft 365Staff mail sits in MBOX files that Microsoft 365 cannot open.
- Apple Mail Users Join Your TenantMac users hand over MBOX exports that need a home in Exchange Online.
- Google Takeout ArchivesTakeout gives you MBOX files while the new mailboxes stay empty.
- Merger or Company ClosureArchived mail from an old company must reach the new users.
- Hundreds of MBOX FilesManual import needs an email client and a lot of drag and drop.
- Old Mail Belongs in ArchivePast years of mail should land in the archive mailbox and not in the primary one.
Bulk for Many Users
One admin account imports the MBOX files of many users together.
Any MBOX Source
Files from any email client are welcome.
No Duplicate Mail
A second import skips mail that already reached the mailbox.
Place the MBOX files of every user in a folder named after the user, for example D:\Import\username@domain.com.
Select the first level import folder in the software and the users appear on the Users tab for validation.
2What changes?
What Changes After the MBOX Import?
Before
- Mail stays locked in MBOX files
- Mailboxes in Microsoft 365 stay empty
- Manual import eats days of work
After
- MBOX mail lands in user mailboxes
- Folders keep their original order
- Bulk import finishes in one session
3What can it do?
Which Features Come With the MBOX Migrator?
Set the source, the admin account and the users from one window.
Three MBOX File Types
Import MBOX, MBX or MBS files with or without a file extension.
Bulk Import for Many Users
Map user folders to Microsoft 365 accounts and import them together.
Impersonation Options
Import with or without impersonation through your admin account.
Archive Mailbox Import
Send old mail to archive mailboxes with the MS 365 Archive destination.
Date Filter
Import mail from a chosen date range only.
Incremental Import
Verify imported mail and skip it when the same file comes again.
Folder Hierarchy Kept
Original folder structure carries over to the mailbox.
Google Takeout Files
Import Takeout MBOX files next to those from desktop email clients.
Import Report
Review file name, email count, size, duration and status and save the CSV.
4Is it easy?
How to Try the MBOX Import in 4 Steps
Test the import on 2 users in the free demo. Buy the license once the mail shows up in the mailboxes.
- 1Download
Install the Demo
Download the 164 MB Windows installer or the 231.47 MB Mac installer. Windows needs Microsoft .NET Framework 4.8.
- 2Select
Set MBOX and Microsoft 365
Select MBOX as the source and Microsoft 365 as the destination. Keep the Email workload ticked and add a date filter if you need one.
- 3Connect
Validate Folder and Admin
Browse to the import folder and validate it. Enter the admin email and the application ID and validate them too.
- 4Import
Start the Import
Validate the users and click Start Import. Demo mode imports 2 user accounts and a license removes that limit.
Screenshots of every step sit in the MBOX import guide.
5What will I see?
Which Screens Does the MBOX Import Software Show?
Follow the path from setup to the first import.
Select Source and Destination
Choose MBOX and Microsoft 365 on the setup tab.
Browse to the MBOX Folder
Select the first level folder that holds the user folders.
Enter the Admin Details
Type the admin email and the application ID and validate.
Open the Help Panel
Check the in app help for every tab without leaving the window.
6Demo or full?
Free Demo vs Full Version
See where the free demo stops and what a license adds.
| Feature | Free Demo | Full Version |
|---|---|---|
| Import of all three file types | Yes | Yes |
| Admin and impersonation import | Yes | Yes |
| Date filter | Yes | Yes |
| Archive mailbox import | Yes | Yes |
| Import report in CSV | Yes | Yes |
| User accounts imported | 2 | All |
| Price | Free | From $50 |
7Will it fit my system?
System Requirements for MBOX Import to Microsoft 365
| Product Version | 7.7.0 for Windows and 7.7.1 for Mac |
|---|---|
| Download Size | 164 MB for Windows and 231.47 MB for Mac |
| Product Type | Desktop software that moves MBOX mail to Microsoft 365 |
| Input Files | One folder per user with MBOX, MBX or MBS files inside |
| Destination | Microsoft 365 user mailboxes and archive mailboxes |
| Windows | Windows 11 (64 bit), Windows 10 (32 and 64 bit) or Windows Server 2025, 2022, 2019 and 2016 |
| Mac | macOS 11 Big Sur and above on Intel and Apple Silicon Macs |
| Processor | 8 core processor |
| RAM and Disk Space | 8 GB RAM recommended. Windows needs 500 MB to install and 20 GB for data. Mac needs 1 GB to install and 5 GB for data. |
| Pre Requisites | Microsoft .NET Framework 4.8 and Visual C++ Redistributable 2015 to 2022 on Windows |
| Admin Needs | Microsoft 365 admin email and an application ID from Microsoft Entra ID |
| Demo Limit | 2 user accounts |
8What is the price?
How Much Does the MBOX Migrator Cost?
You pay $10 per user and the smallest order covers 5 users. Prices are in US dollars.
5 Users
$50
- Import for 5 mailboxes
- Price of $10 per user
- 1 year of free updates
- Unlimited 24x7 support
25 Users
$250
- Import for 25 mailboxes
- Price of $10 per user
- 1 year of free updates
- Unlimited 24x7 support
100 Users
$1,000
- Import for 100 mailboxes
- Price of $10 per user
- 1 year of free updates
- Unlimited 24x7 support
Mac costs the same $10 per user. Buy the Mac edition license or download the Mac edition demo. Move PST archives too with the Upload to Office 365 Tool. Compare every bundle on the RecoveryTools offers page.
9Is it safe?
Can You Trust the Software With Your MBOX Archives?
See Results First
Test the free demo on 2 users and open their mailboxes before you pay.
In Business Since 2007
RecoveryTools stands on a company that began in 2007 and now helps users in over 100 countries. Find more about RecoveryTools.
ISO Certified
Standards ISO 9001:2015 for quality and ISO/IEC 27001:2013 for information security back the company. See the awards and certifications page.
Terms in Plain Sight
Refund, privacy and usage terms are public before you pay. See the refund policy, privacy policy and terms of use.
10Need a hand?
Where to Get Help With Your MBOX Import
Support engineers answer questions before and after you buy. Visit the RecoveryTools support center for phone numbers and more ways to get help.
Live Chat
Talk to an expert on live chat at any hour.
Email Support
Email support@systoolsgroup.com with your Windows or macOS version and the error message.
Remote Session
An expert connects to your computer and solves a hard case for you.
Step by Step Guide
Follow the user guide for the app registration and import screens.
11Still have a question?
Questions About the MBOX to Microsoft 365 Import
Which MBOX files can the software import?
Files from any email client import to Microsoft 365 whether they carry an extension or not. Supported types are MBOX, MBX and MBS.
Can I import Google Takeout MBOX files?
Yes. Google Takeout MBOX files import like MBOX files from Thunderbird or Apple Mail.
How should I arrange MBOX files for many users?
Place the MBOX files of every user in a folder named after that user, for example D:\Import\username@domain.com. Select the first level import folder and keep folder names under 60 characters.
Which admin details does the software need?
You need the admin email and an application ID from an app registration in Microsoft Entra ID. Follow the Microsoft app registration steps and click Validate.
Can the software import MBOX files to archive mailboxes?
Yes. Select MS 365 Archive as the destination to import MBOX files to archive mailboxes through the admin account.
Does the software support impersonation?
Yes. Import with or without impersonation depending on how your admin account is set up.
Can I import only some emails from an MBOX file?
Yes. Tick the Date Filter option on the setup screen and the software imports mail from your date range only.
Will a second import create duplicate emails?
No. MBOX Migrator tracks mail already imported from a file and skips it when you import the same file again.
Do folders stay in order after the import?
Yes. Original folder hierarchy of the MBOX data carries over to the Microsoft 365 mailbox.
Can I save a report of the import?
Yes. Every report lists the file name, the number of imported emails, the file size, the duration and the status. Save it as a CSV file.
Is there a Mac edition?
Yes. Mac edition 7.7.1 works on macOS 11 Big Sur and above with Intel and Apple Silicon Macs. Get the Mac edition demo or the Mac edition license.
What does the free demo include?
Demo mode imports MBOX data to 2 user accounts on Windows and on Mac. License keys remove that limit.
How much does the migrator cost?
You pay $10 per user with a minimum order of 5 users for $50. Windows and Mac cost the same.
Can I get a refund?
Yes. Refund requests are accepted for 30 days under the RecoveryTools refund policy. Software bought without a demo evaluation does not qualify. Email a signed Letter of Destruction to sales@recovery-tools.org. Bundle purchases cannot be refunded.
12Where next?
Related Migration Tools and Guides
RecoveryTools Upload to Office 365 Tool
Imports PST files into Microsoft 365 mailboxes in bulk.
RecoveryTools MBOX Migrator
Converts MBOX files to PST, EML, PDF and more.
RecoveryTools Thunderbird Import Tool
Brings mail from other clients into Thunderbird.
RecoveryTools Outlook to MBOX Converter
Exports PST files to MBOX for other clients.
RecoveryTools MBOX to PDF Converter
Saves MBOX emails as PDF with attachments.
RecoveryTools Office 365 Backup Tool
Backs up Microsoft 365 mailboxes to PST files.
Test the MBOX Import on 2 Users
Download the free demo, import two mailboxes and buy the license once the mail looks right.