Methods to Import Gmail to Office 365 – Complete Guide

Updated On - December 27, 2022 by Nasir Khan |

Reading Time: 6 minutes

G Suite is an amazing set of tools that make business tasks easier. Gmail is the main product of this suite of apps, and it is the most popular email service in the world right now. On the other hand, Office 365 is also a cloud-hosted platform for productivity, collaboration, and communication that brings together all the most important tools. Office 365 services are made to meet the needs of organizations in terms of safety, productivity, and reliability.

If you’ve been using Google’s Gmail email service for a while, you may have noticed that you can’t download all of your old emails from the website anymore.It can be a pain to switch from Gmail to Office 365. This blog will look at the best ways to import Gmail to Office 365 using native methods.

Related Blog: How to Transfer Outlook PST to Office 365 with Network Upload Manually?

2 Simple Methods to Import Gmail into Office 365

You can also do manual IMAP migrations on your own, but contacts and calendar information won’t be moved. You can also use this method to move from Gmail to Exchange on already set up servers. If you want to move from G Suite to Office 365, you can start with the steps below:

  1. Check the domains that you own

If you can log in to your account with your domain registrar, you can set up the DNS record for your domain. Owning the domain name is enough for Office 365. The first step in moving from G Suite to Office 365 is to check your domain name.

  1. Adding more people to Office 365

Everyone who wants to use Office 365 must have a licence. Before moving emails from Gmail to Office 365, every user must have an Office 365 mailbox.

  1. Make a list of all the email addresses using Microsoft Excel

When making migration files, you need to know the password for each Gmail account being moved. Knowing every password is almost impossible, so you can change them and give each Gmail mailbox a temporary password. You don’t have to move all your Gmail mailboxes at once; instead, you can create batches based on what you need to do. In one batch, about 50K mailboxes up to 10 MB can be moved, and each user will be given one row.

  • Choose “Users” when logging into the G Suite admin user console.
  • Pick each user’s name and write down the email address that goes with it.
  • Sign in to the Microsoft Admin Center now. Go to the “Users” menu. Click “Active users” after that.
  • Remember the username column and the Microsoft 365 admin centre window as well.
  • Put Microsoft Excel to work.
  • Type the office 365 address in cell A1, the user name of Gmail in cell B1, and the password in cell C1. Look at this picture:Import Gmail to Office 365

A1: Email address needed for Office 365 domain
B1: Email address on G Suite
C1 = Password used temporarily during the move

In the format shown above, you can enter one mailbox per row. You can put other email addresses, usernames, and passwords in the cells below. Even though the email addresses are similar, the environment has changed (from G Suite/Google Apps to Office 365).

Once you’ve put in all the email addresses, as shown above, save the file in CSV format.

Related Post: Export EML to Office 365 Professionally

  1. Creating places where people can move

Technically, email migrations happen at the migration endpoint, where two email systems that are part of the Migration talk to each other. So, to connect Office 365 to Gmail, you need to make a migration endpoint. Here’s how to set up one or more migration endpoints when moving from Google Apps to Office 365.

  • Follow this path in the Exchange Admin Center:
  • Recipients >> Migration >> More…
  • Choose Migration endpoints next.
  • Click “New +”.
  • Choose the IMAP option, since G Suite is based on IMAP, and keep the default settings on the IMAP migration page. should be set as the server.
  • Click the Next button and do what it says. Then, click “New” to make a new endpoint for Migration.

The next thing to do is set up groups of mailboxes. This lets you sort your mail based on how important it is. It can also help you test your Migration before you move a large number of files.

  1. Transferring mailboxes in groups

As a standard, you can start migrations by making batches with a small number of emails to test. You can start multiple migration batches simultaneously and compare how long each takes. This will help you figure out how long the whole mailbox migration will take. Migrations depend on batch size, speed, internet bandwidth, and the number of connections to the source email system simultaneously.

  • Choose Exchange in the Admins centre.
  • Follow the steps: Recipients > Migration > New > IMAP migration > Migrate to Exchange Online > Next > Move configuration. Here, you can change the order of the batch’s name. Batch1 is an example of this. You can make another batch of the same thing and call it Batch 2.

By default, the batch name shown is the name of the Migration being done at that time. You can use the settings to exclude certain folders from that batch if you don’t want them to be moved.

  • If you want to send some users a copy of the migration report, click Next, then select Browse on the Start the Batch page. After the batch has started on its own, choose “new.”
  • As soon as you see “Syncing status,” the move has begun.

Once the batch runs, you can check the migrated mailboxes’ status. Checking the batch name on the Exchange admin centre dashboard is a simple way to ensure. Sign into Office 365. Type in your username and a temporary password. Do a mail flow test to see if emails are coming in and going out correctly.

Related Blog: How to Import OLM files into Office 365 Directly

  1. Setting the MX record to point to Office 365

The DNS records need to show that your domain has been moved from Google to Office 365. When the MX record was pointed to G Suite, all your emails were sent to Gmail. MX record helps the emails that come in to go to one inbox. There are many ways to change an MX record for different DNS systems. Before you can stop syncing with Gmail, you must wait at least 72 hours because that’s how long it takes for other email systems to notice the change in the MX record.

You can stop the sync with Gmail after 72 hours.

  1. Stopping the sync between Gmail and Office 365

This is the last step in moving from Gmail to Office 365. Once your MX record points to Office 365 for at least 72 hours, you can stop the synchronization between Office 365 and G Suite. Before you delete the migration batch and stop syncing, ensure all emails are sent to Office 365. In the Exchange Admin Center, you can delete the batch of migrations. You need to ensure that the migration batch isn’t shown on the dashboard. If it’s not there, it means that the Migration went well.

After the Migration, you can import your Google Contacts and Calendar into Office 365.

Manual Method: IMAP migration has some drawbacks:

  1. Emails can only be move from the user’s mailbox. IMAP migration does not move Contacts, Calendar items, or tasks from Source (Gmail) to Office 365.
  2. Emails and folder structures move as they are.
  3. Users or admins must manually export their contacts and calendars from the source and then import them into Office 365.
  4. You can only move up to 500,000 items from a user’s mailbox to Office 365 from the source. Every time, the emails move from newest to oldest.
  5. The most significant email you can move is 35 MB in size.

Manual Migration is complicated. Is there any other way?

Several third-party vendors in the market offer automated tools to migrate Gmail into Office 365.

One that several Microsoft MVPs and businesspersons recommend is Regain MBOX to Office 365 converter tool. Don’t get confused; you’ve to utilize the Google Takeout method and export all your Gmail emails in MBOX format and then use the Regain MBOX to Office 365 migration tool to export all files into Office 365.

Free Download100% Secure Buy NowPrice: $39

The tool is laced with several advanced features and offers a convenient GUI so everyone, including novice users, can utilize the tool without any assistance and hassle.

I suggest you utilize the Regain MBOX to Office 365 migration tool’s free version and ask our professionals if you’ve any queries related to this task.


Office 365 is slowly replacing many email clients, and recently Gmail users are also seeking a way to migrate Gmail to Office 365 mailboxes. The most effortless and secure way for the same is by using Regain MBOX to Office 365 migration tool.

Author: Nasir Khan

I am Nasir Khan from India, working as a Content Developer in Regain Software. Here I am writing about our products and their updates. And writing some free solutions from converting emails or Cloud Migration process. We have tools like Email Converter, Emails backup and Cloud migration.

One thought on “Methods to Import Gmail to Office 365 – Complete Guide”

  1. Avatar Barbara Ruddy says:

    Great article! I found it very helpful. I especially liked the step-by-step instructions on how to import Gmail into Office 365. It made the process much easier to understand.

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