[Resolved] – How to Forward Emails from Mozilla Thunderbird to Gmail?

Admin | Email Conversion How to's Software Technology | 4 minutes read | Last updated on February 8th, 2023,

Mozilla Thunderbird is a free desktop-based email client application used by many users. It can configure a number of email accounts and saves mailbox data in MBOX file format. Many of the times, users need to move emails from Thunderbird mailbox to web-based email application like Gmail.

Why do we need to Forward Emails from Mozilla Thunderbird to Gmail?

By enabled the POP settings, the Thunderbird mailbox data can only be opened from that machine where it is installed. And the most common causes why users feel the requirement to connect emails to Gmail is that they wish to open o view their emails from anywhere and from any type of device. This is possible only by forwarding Thunderbird email data to a web-based email client such as Gmail or G Suite.

Advantages of using Gmail:

  • Gmail provides a huge storage space: you can store a large amount of data in Gmail.
  • Gmail is familiar with all systems and devices so that can be simply configured in Android, iPhone, Blackberry, and MS Outlook.
  • Gmail is a web-based email app, which includes zero maintenance cost. And the whole data is saved on Google servers. Therefore, you can instantly access it from anywhere.
  • Gmail allows adding Hotmail and Yahoo accounts so that you can organize them with a single account.
  • Google preserves your data completely safe and protected.

How to Connect Thunderbird to Gmail?

Before forwarding Thunderbird emails to Gmail or G Suite account, you need to enable IMAP settings in Gmail.

Step 1. First, Login to your Gmail account.

Step 2. Click on the Gear icon, then go to Settings.

Step 3. In Settings, go to the Forwarding and POP/IMAP and under IMAP Access select Enable IMAP.

After that you need to open the Thunderbird application by double-clicking on its icon. Then, follow the below mentioned steps.

    1. In Mozilla Thunderbird, click on Tools >> Account Settings.

    1. In the Account Settings, go to Account Action >> Add Mail Account.

    1. Fill your details such as Name, Gmail ID, and password, then click on Continue.

    1. Now, it will take a few seconds, and when it is finished, hit on Done.

    1. Finally, right-click on the email item, and point to Copy To >> Gmail id and then click on the desired folder.

So, your Thunderbird mailbox emails get moved to the Gmail folder.

An automated way to Directly Forward Thunderbird Email to Gmail Account

Manual Process includes a number of steps to connect Thunderbird to Gmail and most of the user finds the manual process is very difficult and problematic to follow. So, here we are also provided an expert’s suggested tool i.e. MBOX to Gmail. It helps you to directly convert, transfer, and forward emails from Mozilla Thunderbird mailbox to Gmail account along with attachments. Every type of user can easily use this automated tool to resolve the query like how to connect Thunderbird to Gmail or how to forward Thunderbird email to Gmail by following the below-described steps.

First, download and install the software and then follow given steps to save Thunderbird email in Gmail.

Step 1. Launch the tool on your Windows screen and view the first screen of it and click on the Next button.

Step 2. Load Thunderbird mailboxes by choosing File Mode or Folder Mode of the tool, and then press on the Next.

Step 3. Now take the preview of all added Thunderbird emails before applying the migration to Gmail account. After that, click on the Next.

Step 4.Choose Gmail as Output Type to save Thunderbird to Gmail and then hit on the Next button.

Step 5. Now enter the required details of Gmail account for Thunderbird migration to Gmail account.

Step 6. After adding the credentials Gmail account, press on the Export to start the migration from Thunderbird to Gmail account.

Step 7. When the process completes, a message will display like Conversion Completed. Then, press on OK to complete the process.


Queries have been resolved like how to forward Thunderbird email to Gmail, how to connect Thunderbird to Gmail account, how to export Thunderbird to G Suite, etc.

After reading this blog, anybody can easily understand how to forward emails from Mozilla Thunderbird to Gmail account as this blog is written with the screenshots. You can try any method between manual and professional to copy Thunderbird emails to G Suite account. But I would like to recommend you to go with the automated or professional method because it has no risk of data loss during the conversion process and provides assurance of 100% success result after completing the process. Where manual method includes high chances of data loss throughout the process and needs technical knowledge to follow this process.