Most Recommended and Used Software By Microsoft 365 Administrators for Office 365 to Office 365 Migration. Successfully Migrated 684 Million+ Emails, 10 Million+ Contacts, 16 Million+ Calendars, and 22 Million+ Documents to Destination Accounts.
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(Note: Teams License must be assigned for personal chat migration.)
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Secure Authorization via OAuth 2.0
Encryption
Comprehensive Reports
ISO 9001:2015 & ISO 27001:2013 certified
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Powerful & Secure Software to Perform Complex Microsoft 365 Migration Workload with Precision
This software is one of the best Office 365 to Office 365 migration tool. It works perfectly on Windows 10 operating system. The folder hierarchy of data is maintained when we migrate from Microsoft 365 account.
In the Microsoft Official page, there was no clear migration path for mailboxes from one Office 365 to another Office 365. Whichever steps mentioned were not at all clear. But when I go through SysTools for Office 365 to Office 365 Migrator, my job becomes so easier. It is very easy to move Office 365 Admin mailbox, and user mailboxes with this software.
Luciana Craig, US
Every time I searched for migration of Office 365 data to another Office 365 mailbox, I was provided with the option to upgrade my license. I am so grateful to SysTools Group for providing the Office 365 to Office 365 migration tool that takes care of the process that falls after license upgrade, which no one else does.
Taylor Jackson, Germany
Though the interface was quite friendly and didn't involve any complicating steps, at some point when I got stuck, contacting support team proved helpful. Hats off to the executive who patiently helped me out at each step of moving data to Office 365 without any delays. Thanks to the SysTools Group team to provide astonishing solution to export Office 365 user mailbox to another Office 365 mailbox.
To perform quick and safe data migration in Microsoft 365 without any data loss, one should opt for this Office 365 Mailbox Migrator. The software allows the user to perform multiple accounts migration concurrently.
684 M+
Emails
10 M+
Contacts
16 M+
Calendars
22 M+
Documents
206+
Email Size(TB)
92+
Docs Size(TB)
: The Office 365 mailbox to Office 365 mailbox migration software also offers a facility to migrate Office 365 emails, categories, tasks contacts, calendars, documents between two different domains.
The migration software allows you to transfer Office 365 mailbox to another account. It migrates emails, contacts, tasks, calendars and documents data from one Office 365 to another Office 365. The software will map and export data from one mailbox into any desirable mailbox of your choice on the other Office 365 account. The software will retain all Meta properties while exporting data from source to destination.
Import CSV for Bulk Users Mapping & Migration
To create a mapping between source and destination user accounts, the tool provides a feature to add a CSV file. It contains a list of source user's and their destination user's account. Admin needs to click on the Add CSV file option to browse the generated CSV. To get a format of CSV to be uploaded, click on sample CSV option.
Migrate Microsoft 365 Domain to Another
The application allows the user to move mailboxes from Office 365 domain to another 
. To implement the migration process, the user has to import a CSV file containing source and destination user ID.
Migration Within Same Domain
The tool allows the user to move data from one user mailbox to another in the same domain. Moreover, the software also maintains the integrity of data and security of the Office 365 data.
A Shared mailbox is one most important components of Office 365. Basically, it allows the users to view and send email from a common mailbox. Sometimes, the need arises to migrate Shared mailboxes in Microsoft 365. Thus, one can make use of the tool to migrate Shared mailboxes from one Office 365 account to another.
Office 365 In-Place Archive Mailbox Migration
Office 365 to Office 365 migration tool allows users to migrate In-Place Archive mailbox between Office 365 . It offers additional flexibility by migrating Office 365 In-Place Archive emails of users' accounts in the approach of Office 365 migration. This way, users can easily migrate user's mailboxes as well as In-Place Archive mailboxes.
Migration within Different Domains
With Office 365 migration tool, one can easily perform Office 365 mailboxes to Office 365 Migration of Different Domains.
: The utility permits the user to perform Office 365 to Office 365 migration including emails, contacts, calendar, documents from one domain to another in two different .: The software is capable to migrate Office 365 data between two different domains in same in a hassle-free way.
3 Types of Re-Run Migration Options
The software provides three modes of re-run migration:
With SysTools Office 365 Migration tool, one can easily transfer Office 365 data in bulk. Once you have logged in with admin account, software will migrate your users and their content to a new Office 365 account with no downtime and data loss during and after migration.
Authenticate and Export Mailboxes
As you add the source and destination mailboxes, Microsoft 365 to Microsoft 365 migration tool first maps the mailboxes. After mapping, it will authenticate each mailbox and proceed with the migrations. You can see the mailbox migration current status window after you click on the Export button.
Generate Summary Report
As the Office 365 migration begins; software will show you the complete details and count of mailboxes being converted from source to destination. You can view both current status report as well as final report which include details like: name of mailbox, mails count, contacts count, calendar count, documents count and the time consumed for the complete migration.
Filter Data According to Date Range
The Office 365 to Office 365 migration software moves data from one Office 365 to another Office 365 account and also allows you to filter data received within a specific date range. It is possible to export the emails, contacts, documents and calendars between "From" to "To" date range by setting the filter accordingly. Also it becomes easy to perform Office 365 to Office 365 migration with selective date range.
Account-Based Priority Migration
With this option, you can set priority for accounts that you want to migrate first. The priority will be set by clicking on the star icon for the intended accounts. This feature, you can easily perform account-based migration between O365 to O365.
Export Selective Mailbox Items
O365 to O365 migration software provides you the option to export mails, contacts, calendars and documents. But if you need to migrate only selected categories, then you can check or uncheck category from the software workload selection. The software will only transfer selected items.
Multiple Project Migration
It allows users to configure multiple projects to perform the migration. Enabling add multiple projects option displays multiple projects on the source and destination columns so that one can add them easily at once. This option helps to migrate various accounts simultaneously on a high-configuration machine.
Support Category Migration
The tool offers a category migration option to migrate labels of emails, calendars, and tasks of all users. When enabled, the tool will migrate labels for each selected workload category from source Office 365 account to destination Office 365 account.
Migrate Tasks (To-Do List)
The Task migration feature supports the migration of reminders, due dates, recurrence(repeat), custom tasks, attachments, and texts. The tool will check for all the task details of each selected user and migrate them to the destination account.
Software Download
Size: 243.71 MB
Version: 7.3.0
Release: May, 2025
MD5: 9447b84d0ce6c9a80cff387adccbd48f
Linux Software Download
Size: 88.4 MB
Version: 5.5
Release:
MD5: 121def6d992374101c96103b4ca5df4a
Trial Limitations
Limitations
The demo version of Office 365 to Office 365 Migration Tool can transfer / move only two user accounts Fully with categories (Mails, Contacts, Tasks, Calendars, and Documents) of one Office 365 to another. To migrate more users, a SysTools migration license is required.
System Specifications
Hard Disk Space
Around 500 MB for installation & tool requires at least 20 GB of free space to store data
RAM
8 GB is recommended
Processor
Minimum 8 core Processor
Operating System
Windows 11 / 10 (64-bit), Windows 2012 / 2016 Server
For Linux: Ubuntu 18.04 LTS
Architecture: x86-64
Application
Pre-Requisites
| Source Tenant | Destination Tenant |
|---|---|
| Exchange | |
| Mail.ReadWrite | Mail.ReadWrite |
| full_access_as_app | full_access_as_app |
| Tasks.ReadWrite | Tasks.ReadWrite |
| Microsoft Graph | |
| Calendars.Read | Calendars.ReadWrite |
| Contacts.Read | Contacts.ReadWrite |
| Directory.Read.All | Directory.ReadWrite.All |
| Files.Read.All | Files.ReadWrite.All |
| MailboxSettings.Read | MailboxSettings.ReadWrite |
| Mail.Read | Mail.ReadWrite |
| User.Read.All | User.ReadWrite.All |
FAQs
Electronic Delivery
On-Demand Features
If you require below given on-demand features then we have an on-demand software called SysTools Office 365 Express Migrator. Go through the below section and learn more about features of on-demand solution. You can also request the software by filling the form.
Migration With User Credentials / Import CSV
The Office 365 to Office 365 mailbox migration tool supports O365 account data migration via user credentials. With this option (without impersonation), users can perform the selective mailboxes migration also. The user can manually enter mail-ID and their password on software or the user can directly import a CSV file that has the details of Source Office 365 ID, Source Office 365 Password, Destination Office 365 ID and destination Office 365 password.
Folder Mapping Option
The tool provides folder mapping option in which you can create a mapping between two folders to migrate data. You have to mention folder names of the source and destination account. The tool will migrate data between those respective folder automatically.
Office 365 Migration Without Project Creation
SysTools Office 365 Express Migrator tool supports migration of Office 365 users data without creating the console project. You just need to login to Office 365 admin account via software to accomplish the migration task.
Pause and Resume Export Process
The O365 migration tool provides an option to pause the process and resume whenever needed. The migration will resume from the point where it was pause. This way the tool ensures to import/ transfer email domain to Office 365 without interruption.
Export Folders via Folder List
This migration application allows the users to move folders by just entering the list of folders (as inbox, sent, etc). This allows the users to perform the selective migration only for those folders which they need to transfer.
| Features | DEMO Version | FULL Version |
|---|---|---|
| O365 Mailbox to O365 Mailbox Migration | ||
| Import CSV to Add Details for User Mapping | ||
| Apply Date Filters on Microsoft Data | ||
| Authenticate and Export Mailboxes | ||
| Category and Task Migration | ||
| Generate Summary Report | ||
| Windows 10 (64-bit), Windows Server 2012 / 2016 | ||
| Support Ubuntu 18.04 LTS | ||
| Complete Microsoft 365 to Microsoft 365 Migration | Two User Accounts | |
| Cost | FREE |
$25 (5 User) |
SysTools Migration Services
Comprehensive Office 365 Migration Solution
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Frequently Asked Questions
Q.
What is Office 365 to Office 365 Migration?
Office 365 to Office 365 migration refers to the process of transferring mailbox data, including emails, contacts, calendars, and documents, from one Office 365 account to another. Using this software you can easily perform Microsoft 365 to Microsoft 365 migrations.
Q.
How can I perform migration using Microsoft Office 365 email migration tool?
Use the below 5 steps to quickly perform Office 365 migration:
Q.
Shared Mailboxes are not validating successfully while validating source and destination permissions. What should I do now?
In case of shared mailboxes, you need to make sure that you "Ignore O365 license validation" by right-clicking on that particular mailbox. (You only have to do this for shared mailboxes). If you won't perform this step, you won't be able to validate permissions successfully.
Q.
Is it possible to move/transfer multiple Exchange Online account within a single domain?
Yes, Our migration software can easily move/transfer Exchange Online to Exchange Online of multiple mailboxes within as well as across the Office 365 domains.
Q.
Which are the Exchange Online Subscription plans on which the Office 365 Migrator is compatible to work on?
The software supports various Office 365 Subscription Plans such as:
Q.
Does Microsoft 365 family subscription include exchange online services? Does SysTools Office 365 Migration Tool support its migration?
Q.
Does the Office 365 Migration Tool Support Shared Mailbox Migration?
Yes, the tool supports migrating shared mailboxes from one Office 365 account to another. Additionally, you can also apply the date filter option to migrate emails, contacts, calendars, tasks, and documents within a specific date range.
Q.
Is Office 365 to Office 365 Migration Supported for In-Place Archive Mailboxes?
Yes, the migration tool supports migrating In-Place Archive mailbox data from one Office 365 account to another.
Q.
What's the Process for Mapping User Accounts during Migration?
The tool provides three options to create a mapping between source and destination user accounts, such as fetch users, import users, or download templates. You can use any of these methods to add users from the source and destination.
Q.
What's the Role of the CSV File in User Mapping?
The CSV file helps in creating a mapping between source and destination user accounts, making the migration process organized and efficient.
Q.
Are there any pre-migration tasks that need to be done?
Yes, tasks like assessing source and target tenants, preparing user mapping, and verifying permissions are important. Additionally, you can check all the pre and post-migration checklists for Office 365 here.
Q.
Are there any compliance and security concerns during migration?
Yes, ensuring data remains compliant and secure during migration is essential. Encryption and data protection measures should be in place.
Q.
Our migration scenario is unique as we only need to bring the data of a specific quarter from last year into the new environment. Does this tool offer any help in this regard?
Yes, SysTools Office 365 migration tool comes with a dedicated Date Filter put in especially to deal with such scenarios. Select the start and end date using the calendar menu. The tool then only looks for the data generated during that particular time frame and moves it toward the destination.
Q.
What is the role of DNS in Office 365 migration?
The Domain Name System (DNS) plays an important role in Office 365 migration. User-friendly domain names are translated into IP addresses by DNS, which enables communication between devices on the Internet. For Office 365 migrations, the DNS records need to be properly configured to ensure easy access to Office 365 services, such as Exchange Online (email), SharePoint Online (workgroup), and so on. During an Office 365 migration, the DNS record associated with your domain must be updated to reflect the new Office 365 environment.
It covers activities such as:
Therefore, all of these DNS settings are important DNS records that must be updated to notify the new Office 365 tenant after migration.
Q.
What happens to email routing during migration?
Email routing needs to be reconfigured to direct messages to the new tenant. You can do this by setting the DNS.
Q.
How Does SysTools Office 365 Express Migrator Licensing Work?
SysTools Office 365 Express Migrator operates on a per-user licensing basis. Each migration from a source user account to a destination user account consumes one license quota. If you reconfigure the migration for either the source or destination user account and perform another migration, it will consume another license quota.
Q.
What should I do if the item counts for email, contacts, and calendar are not showing and only a spinning circle appears in the software?
When migrating a larger database or mailbox, it may take time for the counts to reflect, indicating the software is processing the data. To view the item count, click the reload icon. If the issue persists, contact our technical support team for assistance.
Q.
Do you offer managed migration services?
Yes, we offer managed Office 365 migration services. Our team of experts can handle the entire migration process for you, ensuring a smooth and efficient transition. For more information, visit our "Buy Now" page, where you can find three types of plans:
Q.
Do we need Microsoft 365 cross-tenant add-on licenses with your product?
No, SysTools Office 365 to Office 365 migration tool works independently of Microsoft's cross-tenant add-on licenses. You only need a SysTools migration license to carry out the migration process.
24*7 Free Tech Support...
Uninterrupted Assistance, Anytime, Anywhere: Enjoy Our 24/7 Free Tech Support.
If you encounter any challenges while using the SysTools Office 365 Migration tool, please reach out to us at your convenience. Our dedicated Technical Support team is at your service around the clock.
Experience the benefits of our Office 365 to Office 365 migration software with our complimentary trial edition, which enables you seamless migration for up to two user accounts for free.
Client Testimonials
I have been searching for the best solution to migrate Exchange Online to Exchange Online. Then one day, my friend suggested me your Microsoft 365 migration tool. The tool made me realise that, with the right product, even the Office 365 mailbox data migration within same domain is an easy task. After using this tool, I have become a fan of SysTools' products. Kudos to the development team of SysTools!
Brittany Fallon, Minnesota
At first I was hesitant to use third-party Office 365 to Office 365 migration tool. But on arriving at your product page, I tried out the demo version. On using the free version, I bought the tool as it was all I wanted. Thanks for this product! I am looking forward to many more efficient and reliable products!
Pamela Grump, USA
I was worried about how to migrate contacts to Office 365. I found this tool while browsing through Google and it was a real help for me to migrate Office 365 to Office 365. Even though I am a non technical person, it was really easy for the Office 365 transfer domain to another account with this tool. Thanks to SysTools team for providing this utility to transfer email domain to Office 365.
Samantha Groves, Manhattan
M365 to M365 Migration Software – Workload Selection
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