Google Apps to Office 365 Migration | Complete Stepwise Guide

Aldrich Calvin | September 21st, 2021 | Google Apps, Office 365

In today’s arena, when we consider the best online business Suites, Office 365, and Google Apps (G Suite) are one of them. Both are the leading cloud-based application and provide a number of alluring facilities, such as online file storage, video conferencing, collaboration, etc. Also, most of the organizations are rushing towards Google Apps to Office 365 Migration. Let’s explore why is this happening.

However, Office 365 is slightly costlier than G Suite. But, the reliable and powerful security service of Office 365 makes it cost-efficient. Because of this, it can be seen that many mid-sized businesses are migrating from Google Apps to Microsoft 365 accounts. Hence, the objective of this blog post is to provide an appropriate and trustworthy method on how to migrate email from Google Apps to Office 365. Let’s get started!

Best Approaches for Google Apps to Office 365 Migration

When Google Apps users require to move data in Office 365 mailboxes, then there is a number of manual workarounds available for this. After considering all manual techniques, we conclude that most of them are complex and require lots of time to complete the task.

However, one manual method known as IMAP Migration to Office 365 is much more convenient than other traditional techniques. Although, one limitation is associated with this solution is that it only migrate Gmail email to Office 365 account. Now, go through this method to move Google Apps data to O365.

Also Read: How to Migrate Office 365 to G Suite?

IMAP Migration Google Apps to Office 365

IMAP migration can be done in two ways, i.e. PowerShell and Exchange Admin Center. Here, we discuss EAC method to migrate Google Apps email data to Office 365. One can need to follow the below-described steps sequentially.

Step #1: Make a list of Mailboxes

In this section, you need to generate a file that consists the name of Gmail mailboxes that are going to be migrated in Office 365. To do this, follow the below instructions:

Tip: The maximum size of the created file should be 10 MB only.

If the access for EWS (External Exchange Service) is not enabled in the environment, there are 93% chances for the error to occur.

If the user starts to migrate Office 365 files to Outlook over the Internet.

1. If you have an administrator account credentials, then log in to Google admin console


2. Once you opened the account, then go to Users option.

3. Here, you will clearly see a list of user’s along with last signed in detail.

4. Next step is to select each and every user and note down the email address.

email address

5. Once you have done with the above step, then login to Office 365 admin center.

6. After that, click on Users and then select Active users. Go through the User Name column because you need this information later.

Active Users

7. Do not close Office 365 admin center window.

8. Next, open Microsoft Excel program and create a sheet as mentioned in the screenshot.

create sheet

9. You need to fill following details in each column that are mentioned below:

  • Email Address Column- Type the ID of Office 365 mailbox.
  • UserName Column- You need to mention the log in name for user’s Google Apps mailbox.
  • Password Column- Write the password associated with user’s Gmail mailbox.

At last, save the file in CSV format.

Step #2: Add Gmail to MS Office 365 Account

For step by step migrate of data from google apps to exchange online, there is a requirement to establish a connection between Office 365 and G Suite. For this, you need to perform following instructions:

1. Navigate to EAC or Exchange Admin Center.

2. Now, click on Recipients >> Migration option.

select recipients

3. Click on ‘…’ option and select Migration endpoints.

Migration endpoints

4. After that, go to New+ icon in order to make new migration endpoint.

5. From the following page, select IMAP option.

6. A new page will appear on the screen named as IMAP migration configuration. Here, you need to change the IMAP server setting to Also, make sure that default settings remain same.

7. Click on Next to establish a connection between Office 365 and Gmail. If the connection is verified correctly, then Enter general information page will display on the screen.

8. Now, you need to write a Migration endpoint name, for example, xyz-endpoint. Also, blank the two below boxes and click on ‘new’ to make new migration endpoint.


Step #3: Generate Migration Batch

Users can create a migration batch to import number of Google Apps mailboxes to Office 365 in one go. To do this, go through the below instructions for complete Google Apps to Office 365 migration:

1. Open Admin centers and select Exchange from the menu.


2. You need to navigate to Recipients >> Migration option.

3. After that, click on ‘+’ icon and select Migrate to Exchange Online option from the list.

Migrate to Exchange Online

4. Now, select IMAP migration and click on Next to proceed the process.

select imap

5. On the next page, navigate to Browse and select the migration file. Thereafter, Office 365 will check the file such as file type must be CSV, rows should not be more than 50,000 etc. If any of the parameters fails, it will display an error.

csv file

6. Once the O365 verifies the migration file, number of Gmail mailboxes that going to be migrated displays on the screen. Click on Next.

7. Under the Set the migration endpoint heading, choose the migration endpoint that was created in previous step.

8. From the IMAP migration configuration page, select the default values.

migration configuration

9. Click on Next for further process.

10. Type the name of migration batch under the New migration batch name heading. Also, you can exclude some folders from the migration by entering its name in Exclude Folder box.

exclude folder

11. After that, select Next button.

12. Perform the following steps in Start the batch page.

  • Click on Browse to send migration reports file to rest of the users. Under Properties section, a user can also view report file.
  • Select Automatically start the batch option and click on New to start the process.
start the batch

13. At last, the actual process to migrate Google Apps email data to Office 365 starts.

What About Migration of Google Apps Contacts and Calendars?

It is evident from above that the manual method only migrates Google Apps email to Office 365. The next question that comes into the user’s consideration is how to move Google Apps calendar or contacts. Luckily, we have a solution for this.

Try Proven Software for Google Apps to Office 365

The SysTools G Suite to Office 365 Migration tool is one of the best Google Apps data to Office 365 migration tools. It is a data migration software used to transfer email, contacts, calendars, and documents from Google Apps to MS Office 365 account. Apart from this, it provides ‘Filter’ facility to perform the selective Google Apps to Office 365 migration in a seamless manner. If the users are looking for a solution that migrates all mailbox data of Google Apps to Office 365 in a few clicks, then this tool is a perfect choice.

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Steps for Data Migration from Google Apps to Office 365

Follow these simple steps to transfer Google Apps data to O365:

1- Launch and run the software on Windows OS

select g suite and office 365

2- Choose the “Category” and apply “Date Filter” for selective migration

3- After that, enter the required information and authenticate the Google Apps (G Suite) Admin account.

enter g suite credentials

4- Enter the information about Office 365 and validate the permissions.

enter office 365 credentials

5- Fetch the users with the given options to map Source and Destination users

fetch g suite users

6- Click Start button to begin the migration process

start migration

Also Read: How to Download Google Apps Email to Outlook?

Bottom Line

Today, people are moving from one email program to another application for better email service. Among all, the migration of data from Google Apps to Exchange Online is very much popular. Therefore, in this article, we have discussed a Google Apps to Office 365 migration guide. Because of its downside, we have suggested a professional automatic software that moves calendars, contacts alongside emails from G Apps to O365 in a matter of minutes.