Office 365 migration software






Office 365 to Office 365 Migration Tool

(Average Rating 4.1 Based on 394 Reviews)

Most Recommended Software by Microsoft 365 Administrators to Perform Office 365 to Office 365 Migration. This application has Successfully Migrated 684 Million+ Emails, 10 Million+ Contacts, 16 Million+ Calendars, and 22 Million+ Documents Data to Respective Destination Accounts.

  • Migrate email, contact, calendar, task categories and documents from OneDrive
  • Support Office 365 shared mailbox migration from one mailbox to another
  • O365 migration software also migrates data from Teams to Teams securely
  • Tool simply migrates sites from online SharePoint to SharePoint
  • Migrate In-Place Archive to Office 365 with the O365 Archive Migration Tool
  • Option to import CSV file to add Microsoft 365 source and destination user accounts
  • Date filter for emails, contacts, calendars, tasks and documents to migrate selected data
  • Facility to migrate entire or selective user mailboxes via admin account
  • Allows users to perform Microsoft Office 365 tenant to tenant migration
  • Delta migration facility to migrate newly arrived items from source account
  • Account-based priority migration to set the priority of accounts to migrate first
  • Provides support for users mapping while performing Microsoft 365 migration
  • Advanced utility to migrate groups and group members from Office 365 to Office 365
  • Data that is not migrated: deleted items folder can not be migrated
  • Office 365 to Office 365 migration tool supports various O365 subscription plans
  • Compatible with Windows 11 / 10 (64-bit) and Windows Server 2012 and 2016 versions

Free Live Demo - SysTools Office 365 to Office 365 Migrator Fully Secured Download Version

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Comprehensive Office 365 Migration Solution

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Milestone Achieved By SysTools Office 365 Migration Tool!


684 M+



10 M+



16 M+



22 M+




Email Size(TB)



Docs Size(TB)

Why Users Trust SysTools Microsoft 365 Migration Software?

Recognized By Gartner

Secure Authorization with Office 365 via OAuth 2.0


Comprehensive Reports

ISO 9001:2015 and ISO 27001:2013 certified

24x7 Support

Awards for SysTools Office 365 to Office 365 Migration Tool

Powerful & Secure Desktop Application to Perform Complex Microsoft 365 Migration Workload with 100% Precision

MVP Experiences

Expert Opinions

Best Software for Office 365 to Office 365 Migration

Efficient Solution to Migrate Entire Mailboxes From O365 to O365

video of office 365 migration software

Why SysTools Office 365 Migrator?

To perform quick and easy Microsoft 365 migration without any data loss, one can opt for this Office 365 Mailbox to Office 365 Migrator. The software allows the user to perform multiple accounts migration concurrently.

  • One can easily synchronize contacts and information to make sure that co-workers can send/ receive emails and collaborate easily. Additionally, the utility offers the fastest possible Office 365 to Office 365 migration without affecting the communication process.
  • Security and Performance: The software does not store any credentials such as user-name and password in the software's interface or database while the migration process. Complete privacy of Office 365 user's is maintained by utility while the migration process. When it comes to performance factor, the software exhibits high-performance nature and also holds the integrity of Office 365 data.
  • SysTools provides efficient solution to perform Office 365 migration and also provides other numerous tools to perform SharePoint migration and OneDrive documents migration.

Select Categories

Office 365 Mailbox to Mailbox Migration

  • Mailbox Migration Scope: While migrating mailbox from one Office 365 to another, the tool allows the user to move Office 365 data including Emails, Contact, Calendars, Task, Categories, Documents in a trouble-free way.
  • Move Domains Between Microsoft Office 365 Tenants: Office 365 Migration tool makes the entire migration process an easy and efficient task. As the software provides a mail routing platform that routes mail automatically from source to destination.
  • Office 365 Migration Between Two Domains in the Same t1: 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.

Key Features of SysTools Office 365 Migrator

Best Software to Perform Office 365 to Office 365 Migration

microsoft 365 migration

Perform Office 365 Migration Quickly

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 to add user details

Import CSV for Users Mapping

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.

domain migration features of M365 Tool

Migrate Microsoft 365 Domain to Another t1

The application allows the user to move mailboxes from Office 365 domain to another t2. To implement the migration process, the user has to import a CSV file containing source and destination t2 user ID.

O365 to O365 migration within same domain

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.

Tool Supports Shared Mailbox Migration

Support Office 365 Shared Mailbox Migration

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.

Tool Supports Archive Migration

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 t2. 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.

office 365 to office 365 migration for different domains

Migration within Different Domain

With Office 365 migration tool, one can easily perform Office 365 mailboxes to Office 365 Migration of Different Domains.

  • Migration Between Two Domains in Different t1: 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 t2.
  • Migration Between Two Domains in Same t1: The software is capable to migrate Office 365 data between two different domains in same t2 in a hassle-free way.

Option to Perform Re-Run Migration

Re-Run Migration Option

The software provides three modes of re-run migration:

  1. Retry Failed Items: This mode of migration will migrate items which were not migrated during the initial run.
  2. Re-Run Full Migration: It will run categories to counter any items that may have been skipped during the initial run. There will be no duplication of data.
  3. Delta Migration: this mode will run delta migration for the completed accounts. It will migrate all newly arrived data.

Support Bulk Microsoft 365 Migration

Office 365 Mailbox Migration in Bulk

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 Migrate Mailboxes

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 office 365 migration summary report

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.

Option to Filter Data

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.

Offers Account Based Priority Migration

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.

Migrate Selective Mailbox Item

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.

Allows to Create Multiple Project in Microsoft 365 Migration

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.

Option to Set Maximum Concurrent Users

Set Maximum Concurrent Users

This is another beneficial feature of Office 365 to Office 365 migration tool, that lets to set the maximum number of users that need to be migrated together in each project. In other words, The Number of Migrating Users = Concurrency Value* Number of Valid Accounts.

Support Mailbox Category Migration

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.

Set Maximum Concurrent Users

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.

Download Office 365 to Office 365 Migration Tool
Software Prerequisites to Move Domain / Mailbox from One Microsoft 365 to Another

Software Download

Size : 181 MB

Version : 6.8.1

MD5 : a5a5caa11769e818719cbbad48bf890c

Linux Software Download

Size : 88.4 MB

Version : 5.5.0

MD5 : 121def6d992374101c96103b4ca5df4a

Trial Limitations

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 other Office 365.

System Specifications

Hard Disk Space
Around 500 MB for installation & tool requires at least 20 GB of free space to store data

8 GB is recommended

Minimum 8 core Processor

Operating System

Windows 11 / 10 (64-bit), Windows 2012 / 2016 Server

For Linux: Ubuntu 18.04 LTS
Architecture: x86-64


  • Destination User(s) should be already created at destination Admin account.
  • Microsoft Visual C++ Redistributable Latest (Visual Studio 2015, 2017, 2019, and 2022) Should Be Installed. Download
  • 11
  • User Group(s) should be already created at destination account.
  • Valid Activation Code.
  • Register Application with Microsoft Azure Active Directory and Enable API Permission for Source and Destination Account as follows : Azure Cloud Console Project Creation Steps

instnces of M365

instnces of M365



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.

Request Features

Request the tool by filling the form

Order Now Office 365 to Office 365 Migration Tool
Overview of Software Features – Comparison of DEMO and FULL Version
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)

Frequently Asked Questions

User's Common Queries Related to Office 365 to Office 365 Migration Tool and Their Answers


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.


How can I perform migration using Microsoft Office 365 email migration tool?

Use the below 5 steps to quickly perform Office 365 migration:

  • Step 1. Download & Run Office 365 Migration Software.
  • Step 2. Choose Mailbox Categories & Set Date-Filter.
  • Step 3. Enter Source & Destination Office 365 Details.
  • Step 4. Create Mapping & Add User User Accounts.
  • Step 5. Validate & Click on Start Migration Button.


We are planning to move our Microsoft 365 mailboxes to another O365 domain. So, can we migrate from one Microsoft 365 domain to another using this utility?

Yes, our Microsoft 365 to Microsoft 365 migration tool is efficient enough to move domain from one Office 365 account to another.


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.


Can I use the tool on my Windows 10 machine for moving domain to Office 365?

Yes, it is possible to use the Microsoft 365 migration tool on any machine having Windows OS version 10 or below installed in it to perform Office 365 to Office 365 migration.


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.


Does this tool migrate mailboxes from Office 365 to Office 365?

Yes, You can use this tool to migrate any mailboxes of Office 365 into any user mailbox or into any mailbox. It even lets Office 365 migrate calendar to another account.


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:

  • Office 365 Enterprise E1
  • Office 365 Enterprise E3
  • Office 365 Enterprise E5
  • Exchange Online Plan 1
  • Exchange Online Plan 2
  • Office 365 Business Premium
  • Office 365 Business Essentials
  • Office 365 A1
  • Office 365 A3
  • Office 365 A5


Does this O365 migration tool support migration of the In-Place Archive mailbox and Deleted Items folder?

This software support migration of In-Place Archive mailbox emails. However, it is unable to migrate deleted Items Folders using this utility.


Does Microsoft 365 family subscription include exchange online services? Does SysTools Office 365 Migration Tool support its migration?

Office 365 family subscription plan does not include exchange online services. Therefore, SysTools Office 365 Migration Tool does not support migration from Microsoft 365 family subscription, as the tool requires the exchange online services for respective migration.


Why would I need to perform Office 365 to Office 365 Migration?

There are several reasons that can create an urgent need to perform Office 365 to Office 365 migration such as - organizational changes, mergers, acquisitions, tenant consolidations, rebranding, or simply switching to a new Office 365 tenant.


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.


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.


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.


I need to resume critical business operations, for this, can I prioritize the migration of a particular user account using this tool?

Yes, the SysTools Office 365 migration tool has provisions for adding Account-Based Priority to individual accounts. In the preview screen mark the star icon next to the most critical users. This sends an indication to the tool and it completes the migration of these accounts on a priority basis.


We opted for a gradual migration that lasted for 3 weeks. During this many of our clients sent us business-related emails. How can i migrate those emails to the destination account?

Migration often takes up to a few business days to complete meanwhile emails continue to arrive in the source mailbox. In such a case you can use the Delta migration feature of the SysTools Office 365 to Office 365 migration tool. It shuffles through the already migrated data and only brings in the newly arrived data from the source. It is a remarkable feature, as it ensures complete data transfer without leaving a single bit behind.


Earlier our migration was supposed to take place during Office hours. However, after some discussion, it was scheduled to take place during off hours. This change was to maximize resource availability for the migration project. Is there any option so that the tool can fully utilize this increase in bandwidth?

The SysTools Office 365 to Office 365 migration tool is incredibly adaptive. In the settings tab, there exists a sliding mechanism to increase the number of concurrent migrations. Push the slider towards the right side to migrate up to 20 users simultaneously. With this setting you can perform batch migrations.


What System Specifications are Required for the Migration Tool?

The tool requires around 500 MB of disk space for installation and at least 20 GB of free space for data storage. A minimum of 8 GB of RAM is recommended.


Is Microsoft Azure Active Directory Registration Required for Migration?

Yes, in order to run the SysTools Office 365 migration tool, you have to register the application with Microsoft Azure Active Directory, and enabling API permissions for source and destination accounts is necessary for the migration process. It not only ensures an error-free migration but also ensures a secure data transfer between the source and destination environment.


Are Comprehensive Reports Generated After the Migration?

Yes, the tool generates comprehensive reports that include details like mailbox names, mail counts, contacts, calendars, documents, and migration time.


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.


What data can be migrated during this process?

The Office 365 to Office 365 migration tool can easily transfer mailbox data such as emails, contacts, calendars, and more.


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.


What is the impact on end-users during the Office 365 to Office 365 migration?

End users will not experience temporary loss or access to email and data when using the SysTools Office 365 migration tool. So communication remains seamless. All migration processes leave end users untouched behind.


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.


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.


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:

  • MX records for email
  • CNAME Records for Autodiscover
  • TXT records for verification
  • SPF records for anti-spam
  • SRV records of transactions
  • CNAME records for SharePoint and OneDrive
  • DKIM and DMARC records
  • TTL settings

Therefore, all of these DNS settings are important DNS records that must be updated to notify the new Office 365 tenant after migration.


Is there a risk of data loss during migration?

With proper planning and reliable migration tools, the risk of data loss is minimized. For instance, if you are using the SysTools Office 365 migration tool to migrate Office 365 to Office 365, then the chances of data loss, become almost zero.


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.


How long does Office 365 migration typically take?

The duration needed for completion varies based on data volume, migration type, and network speed. Providing an exact timeframe for the migration isn't feasible. However, for a comprehensive understanding, the migration process might extend to days, depending on the workload.


What is the role of user communication during migration?

Clear communication with users about the migration schedule, expected impact, and any actions they need to take is crucial. It ensures a smooth business operation without creating any communication halt.


How do I handle unforeseen issues during migration?

Having a contingency plan and support resources helps address unexpected migration challenges. However, if you face any issues with the SysTools Office 365 migration tool, then you will receive 24*7 technical assistance to resolve the issue in real time.


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.

What Our Clients Say?

See Why Users Believe on SysTools Office 365 to Office 365 Migrator Tool