How to Migrate Shared Mailbox to Office 365? Elucidated Step by Step Guide

Anurag | December 26th, 2021 | Office 365

Summary: This article covers the easiest solution to the user’s query i.e “how to migrate shared mailbox to Office 365?” So keep yourself with us and continue the reading. Let’s start from the beginning!

What is Office 365 Shared Mailbox?

A shared mailbox is a mailbox that can access by more than one user. It allows the members of the tenant to view, read, and respond to the messages. A shared mailbox email address is not associated with a dedicated user account which means there is no user name and password associated with a shared mailbox.

Users do not need to assign any license to the shared mailbox because the user of Office 365 tenant uses their own account to access the shared mailbox.

Before proceeding any further, let’s get to know the user query:–

“Recently, our organization has acquired a company. Both organizations are using Office 365 tenant, now our concern is to transfer data from O365 (from the acquired company) including O365 shared mailbox data. But, after searching on the internet we don’t have to find any way to migrate shared mailbox data from O365 to O365. If there is an automated migration tool, please suggest it.”

How to Migrate Shared Mailbox Data to Office 365

Before knowing the procedure to migrate shared mailboxes between Office 365 tenants, you have to understand there is no direct way to do this migration. Microsoft does not provide any inbuilt tool for this. Users can use PowerShell scripts to perform this type of operation in Office 365.

Moreover, it’s not possible to migrate a large number of user accounts through this approach. Moreover one should technically sound to perform the PowerShell cmdlets scripts. And minor miss types of errors in these scripts can create multiple errors in the migration process.

These scripts have their own limitations and drawbacks, as they can not preserve the data integrity & folder hierarchy at the post-migration stage.

Related: How to Move Office 365 Mailbox to Another User Account?

Hence, it is suggested to perform this migration with the help of an automated and professional migration tool. We need to select the right software in which we can migrate Shared mailbox data to Office 365.

As per many expert’s recommendations, we would like to suggest you SysTools Office 365 to Office 365 Migrator. The advanced algorithm makes this software standalone, it will migrate shared mailbox data without affecting the structure and hierarchy of data folders.

Apart from shared mailbox migration, the tool supports migration of user’s mailboxes, Office 365 domain data migration. This is one of the finest utilities to migrate Office 365 shared mailbox between tenants, which ensures a smooth and seamless data transfer experience.  

Download Tool Purchase Now

Know Procedure to Migrate Shared Mailbox Data from Office 365 to Office 365

This software automates all the manual processes into these few steps.

Follow the below listed steps to do the same:–

Step 1. Download, install & launch the software, and select Office 365 as source & as a destination.

Step 2. From the workload selection panel you can select items that you want to migrate.  On this screen, you can apply the date-based filter option. After applying options click on Next.

Step 3. Now, login with the source admin credentials such as Admin ID & Application ID. Then click on the Validate button to validate permissions in order to migrate shared mailbox to Office 365.

Step 4. After validating permissions, click on the Next button in order to migrate shared mailbox data between Office 365 tenants.

Step 5. Now, enter Office 365 destination Office 365 Admin ID and Application ID, then click on Validate button.

Step 6. After validating permissions, click on the Next button.

Step 7. Now, it’s time to create a mapping between source & destination between O365 mailboxes. To create a mapping, the tool provides three options – Fetch Users, Import Users, and Download Template. Select any one option and proceed to the next step.

Step 8. After validating permissions click on the Validate button to validate permissions in order to transfer shared mailbox data from Office 365 to another.

Step 9. Now, click on the Start Migration button to migrate shared data mailbox from Office 365 to Office 365.

You may also love to know: How to Migrate Mailbox from On-Premise to Office 365? Learn the Expert’s Way


This problem-solving blog will help users who need a reliable answer on “how to migrate shared mailbox to office 365?” In this blog, we have discussed both the methods, a technical and time-consuming manual method, and a quick and reliable automated solution for the same.

By using the above-mentioned tool, users can easily migrate shared mailbox to exchange online, with maximum data protection and integrity.

User Review

An online query bring me to this post and I have tried this utility and what I liked the most about this tool is the smart features like date-based filter, priority-wise migration option, and option to re-run migration for failed items in Office 365. I have really great experience with this tool and will suggest it to everyone who is looking to perform shared mailbox migration to office 365.

Also Read: How to perform Office 365 Tenant to Tenant Migration Step By Step?