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A Complete Guide to Combine Two Office 365 Tenants After Merger

Undoubtedly, there are several types of email services on Cloud but one of them, is Office 365 developed by Microsoft. In the era of cloud computing, web-based applications are most important in an IT field. At certain times, users may face many challenges while merging two Office 365 tenants together. Therefore, in the upcoming section, we are going to discuss a step-by-step procedure to combine two Office 365 tenants in an absolute manner.

2 Best Techniques to Merge / Combine Two Office 365 Tenants

Users can combine two Office 365 tenants with the help of these two methods. One is manual and the other one is commercial solution. Let us proceed with manual approach to merge two Office 365 accounts.

Manual Workaround

Before discussing the command to integrate Office 365 tenants together, it is important to keep some important things in mind as listed below:

Client considerations

Preparation & Licensing of Tenant

End-user interactions

For the interactions of merging to users in organization, users must prepare themselves using a method described below:

Preparation & Pre-migration Actions: 3 days before the Merger

Preparation of Domain

Note: The domain still needs to use in another domain, therefore the verification will fail.

Scheduling of Merging

Mail Exchanger (MX) Record Time to live test & Disable Directory Sync in Source Domain

Target tenant preparation

Target tenant preparation involves the verification of source tenant in target tenant. End user needs patient at least 1 hour after the removal of domain from the existing domain.

Source tenant preparation

Users can remove the primary email domain from all objects available in source tenant, before integrating to target tenant

After that, run the PowerShell scripts for merge process:

Reset Office 365 bulk password

Print MS Office 365 account with a specific address of proxy into CSV file



Bulk Create Room Mailboxes in Office 365


Remove Secondary Email Address from Mailboxes in Batch

Limitations of Manual Approach

There are so many flaws of manual approach. Some of them are mentioned below:

An Efficient Solution to Merge Two Office 365 Accounts

To overcome all such limitations of manual method thus, users can opt for a reliable third-party tool such as Microsoft Office 365 to Office 365 Migrator. It is one of the best application that helps to combine two Office 365 tenants without any hassle. With the help of this tool, users can keep all duplicate emails away. This application supports all the Windows Operating system and also keep all data intact.

Let’s Wrap Up

Office 365 is the best cloud-based suite that comes up with so many advanced features. At certain times, some users or organizations want to combine two Office 365 Tenants. For this, they start searching for a trustworthy solution, as the data security is so important. Therefore, in this blog, we have discussed manual and automated solutions for merging two tenants of Office 365 suite. Users can follow any of the approach as per their need.