Import MBOX Files to Gmail Account- 2 Top Techniques

Hello, everyone…!! Are you still trying to find out “How to import MBOX files to Gmail account?” If yes, then this clarified blog is for you. There are many times users need to import MBOX files to Gmail account but they don’t know the best technical or easy method to upload MBOX emails into a Gmail account. In this article users will learn the simple method to convert MBOX to Gmail or also learn why users should need to move MBOX files into a Gmail account. Are you lined up for importing MBOX files, such as with or without first attachments, into Gmail? Then let’s start reading.

Users query: Hello, I’m Katty William from New York. I want to move my Thunderbird backup that is saved as mbox files in a Gmail account. I need a fast solution that imports 20 GB of data into a Gmail account. Can somebody suggest to me the simple solution to import MBOX email data into a Gmail account?

Hello, I’m Alex Volkov from London. Recently I switched my email client from Eudora to Gmail because Eudora stopped the new email filter services. I want to move my Eduora MBOX emails into my Gmail account because Gmail has many filters that make email management better. Can somebody suggest to me how to move Eudora emails into a Gmail account without installing Thunderbird? It’s very urgent, and I can’t trust the free method. Can anybody please help me to import Eudora MBOX emails into my Gmail account?

What are Google Gmail and MBOX files? – Explained

Know about the MBOX data: The common file format for storing multiple emails, contacts, in a single text file. Users can open .mbox files with ease, if you’re using Thunderbird, Sea Monkey, Entourage, Eudora, Apple Mail, etc.

Gmail: Gmail, frequently referred to as online web mail, provides 15 GB of free storage that can be shared with Google Drive, Google Photos, and other services. Gmail also allows users to quickly locate emails by keyword, sender, or date using Google’s robust search engine. Its advanced spam protection automatically filters unwanted or harmful messages.

Reasons to Upload/Import MBOX File to Gmail Account- Know Here

Before moving MBOX email data into Gmail account users need to know the main reason to import MBOX files into Gmail account.

• Since Gmail is a cloud-based email service, one can access your emails from any location at any time on any device.
• The emails you receive are safer with Gmail’s robust spam protection and automated content detection. Unlike the email applications that works with MBOX, Gmail has an excellent capacity to prevent over 99.9% of spam and phish emails as of 2025. Once MBOX has been moved into Gmail account, users can open MBOX emails without using Thunderbird or Apple Mail.
• Gmail can be accessed any time on any device, whether it is an Android phone, iOS or a web browser.

Let’s now discuss how to open MBOX files in a Gmail account.

Method 1: Upload Mailbox aka MBOX data into Gmail by Thunderbird

MBOX files are commonly used to store emails. Multiple methods are available if you want to transfer an MBOX file into Gmail. All users who want to add MBOX data into Gmail they need to firstly MBOX data into Thunderbird account. After that they can import MBOX files into their Gmail account. Use the free method first if users don’t want to pay to import MBOX files to Gmail account.

• To begin, launch Thunderbird on your computer and select the three vertical lines located in the upper-right corner.
• Next, choose “Add-ons and Themes.”
• After that users need to search in Tbird “ImportExportTools NG” to add Mailbox emails in program.
• Users need tap on the green option then + Add to Thunderbird button.
• Click on the Add button to use the add-on in Thunderbird.
• Restart Thunderbird.
• Users now need to use the right-click of mouse click to tap on Local Folders option then choose the ImportExportTools NG.
• Right tap and pick the option in Tbird that indicate ‘Import mbox files’
• Pick the ‘single mbox files’ option.
• Upload MBOX emails into Thunderbird.
• Add MBOX file to Thunderbird, that users select it from computer.
• Upload MBOX mailbox database in any Gmail folder after that, go to Gmail account and check files.
• Go to the “Accounts & Import” and after that select the “Settings” >> “More settings.”
• Select “Import mail or contacts” option.
• Enter the email address that you use in Thunderbird account.
• “Start Import” by tapping on this button after choosing the “Import mail” option.

After following this step-by-step guide, users can freely import MBOX email data to their Gmail account. This method is free but there are many limitations when users use this technique to import MBOX files to Gmail.

Limitation in Free Techniques when Users Are Trying to Import MBOX files to Gmail:

• First of all, free method is good but this process is too much time-consuming. In order to finish the process successfully, the user must also have some technical equipment.
• If you manually import MBOX files to Gmail without completing the correct steps, users can also lose some data.
• Large files or folders with attachments are not a good fit for this manual technique.
• If users don’t know about the Thunderbird functions, then they can lose their precious data.

Method 2: Upload MBOX Email File in Gmail Account without Installing Thunderbird

We can use the automated tools if the manual procedure mentioned above is ineffective or if you have big or numerous MBOX files that take a long time to upload. One such tool is the BLR Tools MBOX Converter Wizard, which enables users to import MBOX files straight into Gmail without the need for Mozilla Thunderbird. All email clients that save data in .mbox format are supported. This tool is an advanced utility that make the MBOX to Gmail migration process easy and better for all user whether they are technical and non-technical background.

To know more about the software users need to download and install the program on computer before. Users can begin the email migration from MBOX to Gmail by using this automated solution. After installing software import MBOX file into Gmail account by following the steps below.

To import/upload/transfer or add MBOX files to Gmail without installing Thunderbird, follow these steps:

• Download or install BLR Tools MBOX to Gmail Importer. 
• Users can choose MBOX backup from PC in and add in the software.

• Choose the MBOX data that users want to move in Gmail, after previewing them.

• Use filters option to make the conversion according date wise, name wise.

• Choose Gmail as the saving option after clicking Export.

• To start the migration process users need to enter Gmail login information and click the convert button to initiate the MBOX to Gmail migration process.

Contemporary Characteristics in this advanced BLR Tools MBOX to Gmail Migration Tool

• In few clicks, Users can now import MBOX files in bulk with multiple folders into Gmail account.
• Throughout the process, the email formatting and all of the Meta properties stay the same.
• Selectively importing MBOX files to Gmail possible with this application. Users have also option to filter email according to date range.
• Enables attachment extraction from MBOX files as well.
• Operates on all of the most recent versions of Windows, including Windows 11, 10, 8, and 7.
• With this complex solution users have option to upload MBOX files into another email client.
• Safe to import bulk MBOX backup into Gmail account without any data size limitations.
• Make the conversion simple because of the graphical user interface.

In conclusion

The best methods for importing MBOX files into Gmail, with or without Thunderbird, were covered in this post. Some of you can select the strategy that works best for you. With the help of the mentioned tool, one can import MBOX files to Gmail without the need for Thunderbird or technical expertise. Nevertheless, in the first method users need to download or use of Mozilla Thunderbird email program and knowledge of IMAP settings. We now hope that you understand how to quickly and instantly import MBOX files to your Gmail account. Since the tool’s demo version is free, we always advise you to use it first. Users can directly export the first 15 emails from MBOX files to a selective Gmail location by using the free trial edition.

Frequently Asked Questions:

Can I import MBOX files directly into Gmail?

Yes, users can import MBOX files to Gmail directly if they use the professional method. In the free method, users need to download multiple MBOX-supportive email clients to upload MBOX emails into their Gmail account.

What is the easiest or simplest method to migrate MBOX email with attachments into Gmail?

Use the BLR MBOX File converter to import MBOX with intact email attachments into Gmail without any trouble. If users don’t have technical knowledge then they can use the simplest way to move MBOX emails with attachments into Gmail with the use of pro method.

How long does a single method take if I start importing MBOX into Gmail?

If users choose the manual method, it obviously takes very much time because of installation after that, IMAP settings and more. If users choose the expert solution, then they can import any size of MBOX files into Gmail within minutes.

During the MBOX to Gmail email migration, will I lose any data?

No, users will not lose any data from MBOX files once the conversion process begins.

Can I import multiple bulk MBOX files into one Gmail account without any data size limitation?

Yes, users can import multiple MBOX files into Gmail at one time without any data size restrictions. Using this tool, importing MBOX files or folders into a Gmail account is simple.

Before importing MBOX data into a Gmail account, are there any Gmail settings I need to enable?

Users just need to enable the IMAP settings before starting the MBOX to Gmail conversion process.