So, what you can do is merge PST files of Office 365 accounts with the help of Kernel Merge PST tool. However, you can use two accounts side-by-side, which is not an ideal option for every business. In general, Microsoft doesn’t provide any manual solution to merge Office 365 accounts.

Here are some scenarios that require merging two Office 365 accounts. Even if there is a manual solution available, it requires proper planning and preparations to avoid any interruption to the mail flow. For such scenarios, there is no manual method available to merge two Office 365. But, there always comes a scenario where they need to merge two Office 365 accounts. Many businesses and individuals often use more than one Office 365 account to manage different users and data. As an Office 365 user, you might have seen many queries on Microsoft communities related to merging Office 365 accounts.