Are you fed up with Gmail and wish to migrate your emails from Gmail to Office 365? You’re not alone! Every day, hundreds of users all around the world rely on our email migration tool to move their data to Microsoft. Simply follow this tried and tested approach to easily set up your Gmail to Office 365 migration.
Summary: How to Migrate from Gmail to Office 365
- 1️⃣ Make sure to have all credentials at hand
- 2️⃣ Download MailJerry
- 3️⃣ Enter your credentials and start your email migration
BONUS: Keep your accounts synced after the migration
Still have questions? Have a look at our FAQs!
Your advantages when using MailJerry:
✅ Automatically converts Gmail labels to folders
✅ Fully automated: Start your migration and MailJerry takes care of everything!
✅ Cloud email migration: No need to upload / download your emails.
✅ Data flatrate: Unlimited GB – unlimited number migrations!
When migrating large mailboxes (20 GB+) from Gmail to Office 365, please have a look at this tutorial:
➡️ Large-scale Gmail to Office 365 Migration
Checklist:What you’ll need for the Gmail to Office 365 migration
To migrate Gmail to Office 365, you’ll need:
1️⃣ your Office 365 credentials (username + password)
2️⃣ your Gmail credentials (username + password)
3️⃣ MailJerry – our email migration tool
Let’s go!Migrate Gmail to Office 365
To migrate from Gmail to Office 365, simply follow these steps:
1. Download MailJerry or open MailJerry in your browser
2. Click on “New Migration”.
3. In the section “Existing Address”, select “Gmail” as account type.
4. Enter your email address and click on “Connect with Google Account”.
In the signin popup, enter your Gmail password and follow the steps described by Google to grant MailJerry access to your account.
➡️ After successfully connecting with Gmail, your account will be marked as signed in.
5. Under “New Address”, select “Microsoft / Office 365″ as account type
6. Enter your Office 365 email address in the field “Username”.
7. Click on “Connect with Microsoft Account”.
8. In the Microsoft sign in popup, enter your password and click on login.
➡️ After connecting with your Office 365 account, your account will be marked as signed in.
9. Now click on “Check Settings” and wait until MailJerry checked both of your accounts.
➡️ Depending on the data volume you wish to migrate from Gmail to Office 365, checking your accounts might take a few minutes.
10. After the mailbox check has finished, you are redirected to the summary.
Here, you’ll see how much data (data volume, number of emails & folders…) will be migrated to Office 365.
To start to migrate from Gmail to Office 365, click on “Start Your Migration”.
✅ All done! Your Gmail to Office 365 migration is now up and running. Lean back and wait until all email data was moved to Office 365.
Thank you so much for providing such an amazing tool. I was looking into doing this with another software that would've taken me forever to learn and do but with MailJerry, my email migration was a lot easier!"
BONUS:Sync your Accounts after the Gmail to Office 365 Migration
After your email migration finished, it is very likely that you still receive emails in your old Gmail account. To automatically migrate those emails from Gmail to Office 365 as well, simply enable the mailbox sync:
1. In MailJerry, go to “Overview” and click on your migration.
2. On the details page, scroll down to “Options” and enable the “Auto Sync”.
For the next 10 days, all emails received in your Gmail account will automatically be forwarded to your new Office 365 mailbox!
Need to keep your accounts synced for more than 10 days?
Simply click on “Backup Mode” and select your desired interval (daily, weekly or monthly sync).
Migrate Gmail to Office 365:Common Questions
I forgot my Gmail password / username. What should I do?
In case you can’t recall your Gmail username, use the Google Username Recovery tool. For a step-by-step guide on handling a forgotten username, visit this link: https://support.google.com/answer/2452047?hl=en
If you still know your username but can’t remember your password, you can reset your password with the Gmail Account Recovery Tool. For all options on how to recover your password, have a look at this page.
I don’t have the username / password for my Office 365 account!
Don’t worry! As with Gmail, Microsoft offers a wide range of tools to help you recover your data:
If you can’t remember your username, use the Microsoft Username Recovery Tool.
Forgot your Office 365 password? Have a look at this help page to find out how to reset the password for your account.
Need further instructions? You can find a detailed description on what to do in case you forgot your username and / or password here.
Do I have to enable IMAP for my Gmail account?
No. Since January 2025, IMAP is enabled by default for all Google accounts. In fact, it’s not possible to disable IMAP for your Gmail account.
My migration from Gmail to Office 365 is very slow! What can I do?
Unfortunately, Google applies bandwidth limits (max. 2500 MB of downloaded data per day). This means, after migrating 2500 MB, your migration will run significantly slower and take more time.
But don’t worry! Do not stop the email migration. It is absolutely no problem when your migration runs longer than 24 hours. In fact, we already migrated very (very) large mailboxes that took more than two weeks without any problems!
I’m im a hurry. Is there any chance to speed up the migration?
If you’re in a hurry and run into Google’s bandwith limits, you can do the following:
1. Stop your current migration (don’t worry, you won’t loose any progress you made so far).
2. Start the migration again as described in this tutorial, but enable the option “Ignore Google Bandwidth Limits”.
With this option enabled, MailJerry ignores Googles bandwith limits and tries to migrate your email data as quickly as possible.
Only downside: It’s possible that you’ll get disconnected by Google during the migration. If this happens, you have to start the migration again, this time without enabling “ignore bandwidth limits”. Since you won’t loose any progress you made until your migration broke, it’s worth a try!
Not all emails where migrated, what can I do?
When migrating large emails to Office 365, it is possible that emails larger than 25 MB are rejected due to Microsoft’s maximum message size limit. To change the max message size, follow this tutorial.
After changing the maximum message size, enable the auto sync or click on the “Sync Now” button. MailJerry will now migrate the skipped emails as well.
My migration finished with errors / not all data was migrated.
In this case, you very likely exceeded Microsofts email limits. This happens if you migrate large mailboxes (10GB+) or mailboxes with lots of emails. To resolve the problem, please disable Microsoft’s EWS throttling and run a new sync (e.g. by clicking on the “Sync Now” button on your migrations details page).
I need to migrate a large mailbox from Gmail to Office. How do I do this?
For large-scale Gmail to Office 365 migrations, please have a look at this tutorial:
➡️ How to Migrate Large Mailboxes from Gmail to Office 365
I’ve assigned multiple labels to one email. What happens after the migration to Office 365?
When migrating from Gmail to Office 365, Gmail labels are converted to folders. The email containing multiple labels is then moved to the folder that represents the first label the message was originally assigned to.
If you’d like to re-build the same folder structure as in Gmail (= the same email is contained in both folders a.k.a labels), you can do so before starting the migration on the summary page: Simply enable the option “Migrate Duplicates”. By doing so, MailJerry will create copies of your message and move a copy in every folder that represents the former labels.
Example: Your message has the labels “Important” and “My Label”. When enabling duplicates, your message is moved to the folder “Important” AND a copy of the message is created and moved into the folder “My Label”.
➡️ For more details, please have a look at this article: How to Migrate Gmail Labels
MailJerry did not migrate all emails, but shows lots of skipped messages. Why is that?
When migrating emails with custom Gmail labels to another provider (including Gmail), skipped messages can occur. But there’s not need to worry: As long as MailJerry does not show failed messages, you can rest assured that all emails were migrated.
The skipped messages are shown because of how Google handles Gmail labels, which is different from all other email providers working with folders. Due to this Gmail characteristic, MailJerry skips emails to prevent duplicates.
If you wish to learn more, have a look at this detailed blog post.
Can I close MailJerry during the email migration?
Yes. Migrating large mailboxes from Gmail to Office 365 might take some time. Since your data is directly migrated between Gmail and Office 365, you can close the MailJerry software at any given time and even shut down your computer, without loosing any data / migration progress!
Still have further questions?
Have a look at the following pages:
