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SysTools Office 365 to Office 365 Migration Tool

o365 migration tool






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.

(Average Rating 4.2 Based on 280 Reviews)
  • Migrate email, contact, calendar, task categories & 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
  • Allow to migrate Office 365 In-Place Archive mailbox from Office 365 accounts
  • Option to import CSV file to add Microsoft 365 source & 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 & 2016 versions

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

SysTools Migration Services
Comprehensive Office 365 Migration Solution

Unlock the Faultless Office 365 Migration Service

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Milestone Achieved By This O365 to O365 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

office 365 to office 365 migration tool

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 Migrate Office 365 to Office 365 Account / Mailboxes

microsoft 365 migration

Migrate Office 365 to Office 365 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 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.

M365 Migration 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 & destination t2 user ID.

O365 to O365 migration same domain

O365 to O365 Migration in 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.

office 365 to office 365 migration tool

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.

Microsoft 365 User Archive Migration

Office 365 In-Place Archive Mailbox Migration

Office 365 to Office 365 migration tool allows users to migrate Office 365 In-Place Archive mailbox emails 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 software

Office 365 to Office 365 Migration 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 migrate Office 365 data 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.

Re-Run Microsoft 365 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.

bulk microsoft office 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 & their content to a new Office 365 account with no downtime and data loss during & after migration.

authenticate and export mailboxes

Authenticate & 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.

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 & also allows you to filter data received within a specific date range. It is possible to export the emails, contacts, documents & calendars between "From" to "To" date range by setting the filter accordingly. Also it will be easy to migrate Office 365 mailbox to another with selective date range.

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.

export selective mailbox item

Export Selective Mailbox Items

O365 mailbox to O365 migration utility 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.

M365 to M365 Migration tool

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.

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.

multiple project office 365 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 : 180 MB

Version : 6.8.0

MD5 : 730abb02068b57d393dfe4a77e8b4e0a

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, & 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 & Enable API Permission for Source & Destination Account as follows : Azure Cloud Console Project Creation Steps



Electronic Delivery


On-Demand Features

If you require below given on-demand features then we have one on-demand software called SysTools Office 365 Express Migrator. Know features of on-demand solution, go through the section below:
and request the tool 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 & 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 & 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 & 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 Tool 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 & Export Mailboxes
Category & 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 & their Answers

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 to Office 365 migration:

  • Step 1. Download & Run Office 365 Migration Tool.
  • 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.

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

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.
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 migrate Office 365 mailbox to Office 365 account.
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.
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.
This software support migration of In-Place Archive mailbox emails. However, it is unable to migrate deleted Items Folders using this utility.
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.
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.
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.
Yes, the migration tool supports migrating In-Place Archive mailbox data from one Office 365 account to another.
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.
Yes, the SysTools Office 365 migration tool offers the feature of account-based priority migration. This further allows you to set the priority of O365 user accounts to be migrated first.
The tool supports delta migration, which migrates newly arrived items from the source account to the destination. It is a remarkable feature, as it ensures complete data transfer without leaving a single bit behind.
The demo version can transfer only two user accounts fully with categories, including emails, contacts, tasks, calendars, and documents.
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.
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.
Yes, the tool generates comprehensive reports that include details like mailbox names, mail counts, contacts, calendars, documents, and migration time.
The CSV file helps in creating a mapping between source and destination user accounts, making the migration process organized and efficient.
The tool to migrate Office 365 to Office 365, can easily transfer mailbox data such as emails, contacts, calendars, and more.
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.
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.
Yes, ensuring data remains compliant and secure during migration is essential. Encryption and data protection measures should be in place.
Some settings might need to be reconfigured post-migration due to differences between tenants. Moreover, if you want any custom workload to migrate Office 365 to Office 365, then you can fill the query form to get the custom software.
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.
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.
Email routing needs to be reconfigured to direct messages to the new tenant. You can do this by setting the DNS.
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.
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.
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.

What Our Clients Say?

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