Migrate Thunderbird to Google Workspace with All Attributes

Published By Jamie Kaler

Approved By Rollins Duke

Published On May 28th, 2026

Reading Time 7 Min Read

Quick Overview: In order to migrate Thunderbird to Google Workspace for organisations or professionals, you can try out the manual approach using IMAP configuration after connecting the account. The expert-recommended solution is RecoveryTools Thunderbird to Google Workspace Importer for the exact label mapping & overcoming GWS bandwidth limit.

Many users transfer Thunderbird data to Google Workspace when switching from a local desktop-based environment to the cloud for better security or after encountering a crash/ corruption. It comes with multiple advantages, such as more tools – Sheets, Docs, Drive, Teams & more, and better accessibility without time-consuming configurations.

Here we have discussed a step-by-step method to upload Thunderbird data on Mac & Windows to a Google Workspace account (custom or default).

Before You Begin Thunderbird to Google Workspace Migration

Note: The Thunderbird to Google Workspace migration only lets you move existing Thunderbird data to a GWS email account. If you want to fetch new emails from Thunderbird accounts to Google Workspace, you need to update the DNS records or set up forwarding separately.

You have already set up the Google Workspace environment and user accounts with IMAP enabled & required permissions to import.
The maximum Mozilla Thun data you can import into your GWS business account is restricted by the mailbox limit.
Offline Thunderbird to Google Workspace transfer is not possible; you need a stable internet connection.

Free IMAP Method to Migrate Thunderbird to Google Workspace

Here are the steps to follow to import a Mozilla Thunderbird profile into the Google Business account:

Note: You need an active installation with a running profile. This method does not work with Thunderbird backups.

Open Thunderbird on Mac & Windows.
Click on the Menu (three lines) on the top right.
Choose Add Account >> Email & configure your Google Workspace account in Thunderbird.
Move Thunderbird custom folders to Google Workspace account: Right-Click >> Move To >> Choose Google Workspace ID as the saving destination.
Move Email from Inbox, Sent, Draft & Other inbuilt folders (You cannot use Move To directly). Press Ctrl+A to select emails >> Right Click >> Move To and Choose Google Workspace ID as the saving destination.

Tip: Instead of Right-Click >> Move To, you can directly use the drag & drop approach as well.

Transfer Thunderbird Contacts & Calendars to Google Workspace ID

For a complete migration, it is also essential to upload the Thunderbird contacts & calendar into the Google Workspace account.

Steps to Move Thunderbird Address Book to Google Workspace Contacts:

Your Google Workspace account must be configured in Thunderbird beforehand to migrate Thunderbird to Google Workspace with contacts & calendar.

Press Alt+2 to open the Address Book in Thunderbird.
Locate your Google Workspace Address Book (if need be, rename it for easy identification).
Now open the “All Address Book.”
Press Ctrl+A to select all Thunderbird contacts.
Simply drag & drop to move to the Google Business account.

Steps to Migrate Thunderbird Address Book to Google Workspace Contacts:

Note: This process cannot be standalone performed by the Thunderbird application. You need to rely on the web-based Google Calendar interface as well:

Open Calendar in Thunderbird (Alt+3).
Go to Home on the bottom right. Right-Click >> Export Calendar.
Finally Save.
Open Google Calendar on your Web-Browser.
Click on Gear >> Settings >> Import & Export.
Click “Select File from Computer”, choose the exported file from Thunderbird.
Finally, click Import.

Complexity of account configuration, bandwidth limit, loss of label mapping, and time taken & repetitive manual are limitations of the manual way to migrate Thunderbird to Google Workspace.

Most Secure, Efficient & Fast Thunderbird to Google Workspace Migration Tool

RecoveryTools Thunderbird Migrator for Google Workspace accounts is an automated industry-standard tool that lets you move all local Thunderbird data with contacts & calendar, with SBD structure intact, directly at once. Widely trusted by businesses, organisations, and IT admins across the globe, easy migration on Mac & Windows with its user-friendly interface. Transfer emails from active, backed-up, or crashed Mozilla Thunderbird installations with the security of OAuth and the speed of next-generation algorithms.

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Step-By-Step: How to Move Thunderbird to Google Workspace?

Download the software and run it on your device to migrate Thunderbird to Google Workspace.
Next, the data will load automatically from the configured Thunderbird account, or you can choose manually.
Now, all the Thunderbird data will appear on the screen. Select the required data and click on the Next icon.
And then click on the “Select Saving Option” and choose “Google Workspace” from the drop-down.
Now, enter the login details of your Google Workspace account.
And click on the Next icon to start the Thunderbird to Google Workspace migration.

Why This Software for Thunderbird to Google Workspace Migration?

This software has the power to load the data automatically from the Thunderbird account. Also, users can migrate Thunderbird emails to Google Workspace manually.
This software comes with a user-friendly interface for both technical and non-technical users.
Users can migrate Thunderbird to Google Workspace in bulk without any hassle
The Thunderbird Converter tool extracts the address book and all contact information (name, address, email, phone, and mobile phone).
During email transmission, Thunderbird saves all details and relevant data. and maintains the email system folder hierarchy.
One of the most advantageous aspects of this software is that it does not require the installation of the Thunderbird application.

FAQ: Importer Thunderbird to Google Workspace

Q1: Is there any data restriction that can be imported into Google Workspace?
Yes, manually IMAP access is limited to 500 MB of uploads per day due to the bandwidth limit. This limit can be bypassed with the use of a professional Thunderbird to Google Workspace importer.

Q2: Is there any direct way to import Thunderbird emails to Google Workspace?
No, even the Google Workspace Data Migration Service is not directly possible. You can manually do so via IMAP synchronization or use a professional tool.

Q3: Will I be able to import all Thunderbird data into my new Google Workspace accounts?
Yes, you can migrate Thunderbird local folders, emails from other accounts (with attachments), contacts, & calendar, and metadata. However, many details like Thunderbird settings, junk mail adaptation & filter will not be migrated.

Q4: I want to export data from Thunderbird 60.0. Is this software capable of doing this?
Yes, this software is capable of exporting data from all versions of Thunderbird.

Q5: Can I migrate Thunderbird to a Custom domain Google Workspace account?
Yes, however, you additionally require your server settings information.

Client Reviews

“Thanks to RecoveryTools, since I needed to move my Thunderbird emails to my Google Workspace account for professional reasons, I looked for a solution that could migrate Thunderbird to Google Workspace. So, I downloaded this software, and it works brilliantly.”

“My buddy recommended this solution for Thunderbird to Gmail migration, and this software works quickly and efficiently, as well as exporting Thunderbird emails with all attachments. Thank you, RecoveryTools, for the fantastic solution.”

Final Words

Finally, as you can see above, we described all the procedures to migrate Thunderbird to Google Workspace by using an amazing solution, which comes with the best features. But still, if you have any doubts, then download the demo versions of this software to see how the software works. Hope you like the article.