03 Easy Solutions to Import MBOX Files to Gmail

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  • Updated on August 28th, 2023

Summary: This guide will explain the top three methods to import MBOX files to Gmail. We will start by understanding Gmail and MBOX and why you might want to import MBOX files. Then, we’ll provide step-by-step instructions for each method. Once you’ve reviewed this article, you can choose the technique that best suits your needs. Additionally, we will discuss manual ways and the professional MBOX Importer Tool, providing detailed instructions on importing single or multiple files.

Gmail: Gmail is a free email client provided by Google. In today’s generation, 1.5 billion users use Gmail for personal and professional work. It is the most significant email in the world because it’s mobile-friendly, offers 105 languages, 15 GB of free space to store emails, and more. It has various features that allow you to send and receive emails without paying.

MBOX File: An MBOX file is a standard mailbox format for storing email messages. It is a plain-text file containing multiple email messages concatenated, with each message separated by a specific delimiter. MBOX files are commonly used for archiving or transferring email data between different email clients.

Importing MBOX files to Gmail offers benefits such as consolidating email accounts, accessing advanced features, ensuring backup and disaster recovery, improving email management, enhancing collaboration, and utilizing Google’s ecosystem.

It allows for centralizing multiple accounts, accessing powerful search and management tools, and integrating with Google services. Importing MBOX files to Gmail merges their contents, so creating a Gmail backup is recommended.

Best 03 Methods to Import MBOX Files to Gmail

There are various manual methods to import MBOX to Gmail, but we’ll provide the best two manual ways to upload your MBOX file into Gmail. The one-by-one instructions are given below:

Method 1: Import MBOX to Gmail without Thunderbird

  1. Run Gmail and log in with username & password.
  2. Tap on the “Settings” option in the top-right corner of the Gmail interface.
  3. Choose “Account and Import” or a similar option from the drop-down menu.
  4. Next, tap on the “Import Mail & Contacts” option.
  5. Open a new tab, enter your Thunderbird email address, and click “Continue.”
  6. Enter the password for your Thunderbird email account and select “Continue.”
  7. Choose the desired options, such as emails and contacts.
  8. Tap on the “Start Import” button to start the import process.

Note: Wait for Gmail to import your MBOX file into your Gmail account.

Method 2: Import MBOX Files to Gmail Using Thunderbird

In this method, we will use Thunderbird to import MBOX files into Gmail. First, we will configure the Gmail account in Thunderbird and then import MBOX files into it.

Step 1: Configure your Gmail Account to Thunderbird

  1. Open the Thunderbird application on your system.
  2. Set up your Gmail Account by using the Account Setup wizard.
  3. Add your full name/email & address/password.
  4. Choose to enable the “Remember password” option if you want Thunderbird to remember your password for future logins.
  5. Click on the “Continue” button.
  6. Select the IMAP option and click “Done”.
  7. Then, verify your Gmail email address and click on the “Next” button.
  8. Enter your account password and click “Next” to finish the sign-in process.

Note: Wait for Thunderbird to fetch your Gmail account data. Once the account is configured, tap on the “Done” button. Your Gmail account is now added to the Thunderbird application.

Step 2: Import the MBOX Files to Thunderbird (Gmail Account)

  1. Open the Thunderbird app and click on the Menu button.
  2. Go to Add-ons and select Add-ons from the menu.
  3. Click on ImportExportTools NG, then click on the Add to Thunderbird button.
  4. A pop-up message will appear confirming the addition of ImportExportTools NG. Hit the Add button.
  5. Go back to the Thunderbird app and right-click on the folders.
  6. Choose ImportExportTools NG from the menu and select the Import MBOX file option.
  7. Enable the option “Import directly one or more MBOX files” and click OK button.

Note: You must browse your computer to find the MBOX file you want to import. Once you find it, click Open. Your MBOX file has been successfully imported into your Gmail account. But it has boundaries that make your task difficult.

Limitations of Manual Methods:

There are a few limitations to manual methods:

  • You can only import one file/folder at a time.
  • The manual way is lengthy and prone to error.
  • This technique is technical; therefore, it is challenging for novices.
  • It can lose your data when you skip a single step.

The manual method helps you upload MBOX to Gmail if you have technical expertise. On the other hand, it has limitations like limited accuracy and precision, a lack of standardization and scalability, and many more. Therefore, I’ll share the best risk-free and direct method with you to easily import MBOX to Gmail without error.

Method 3: Import MBOX Files to Gmail Account Using Automated Technique

A step-by-step guide on how to migrate MBOX to Gmail using a professional method:

  1. Firstly, Download and Install MBOX Migrator Tool on your system and Run.
  2. Then, choose the Select File/Select Folder option per your requirement.
  3. Select the MBOX file/folders you want to migrate and click Open after selection.
  4. After selecting all desired files/folders, click Next.
  5. After that, preview your selected files/folders from the tree-structure list and click Next.
  6. Choose the GMAIL option from the drop-down list.
  7. Enter your User Name & third-party Gmail password and click the Sign-In button.
  8. At last, choose the features/filters as per your needs and click on the Convert button to start the process.

After processing, your files/folders will be imported into your Gmail account without losing any data.

Advantages of MBOX Migrator

  • This tool makes it easy to perform batch email migrations of MBOX files. You can also export all emails and attachments from the MBOX file to Gmail.
  • Its auto-search feature lets you quickly find MBOX files on your local system. It supports the migration of MBOX files of any size. The date range feature helps you filter emails based on a specific start and end date so that you can migrate emails within a selected period.
  • The tool has a user-friendly interface designed for non-technical users. You don’t need to install Gmail beforehand for the migration process.
  • It also offers a free demo version, allowing you to convert 50 email items per folder at no cost. It provides a convenient feature to directly import single or multiple MBOX files into Gmail per your requirements.


We previously discussed the top three methods to import MBOX files to Gmail. While all these methods work to upload MBOX files to Google, manual processes have limitations and require technical expertise to be used effectively. On the other hand, the professional approach is a risk-free and direct solution that allows you to migrate multiple files at once. It also offers various features and filters that simplify the task. Now, it’s up to you to decide which technique to use for adding MBOX to Gmail. You can try this professional MBOX Migrator Tool, which provides a free trial version capable of migrating 50 items per folder.

Frequently Asked Questions

How to import mbox to Gmail in bulk?

Using the MBOX Migrator Tool to import Mbox files to Gmail in bulk would be best. It provides various features/functions that make your task easy. It’ll help to save your time and effort and keep your task short.

How to convert Gmail mbox to pst free?

1. Run Outlook on your PC.
2. Select the file icon, then select Open & Export>>Import/Export.
3. Choose the Outlook data file (.pst) option.
4. At last, Browse the file and Finish.
You can also use the MBOX Converter Tool to convert MBOX to PST simultaneously. You can download a free demo version. It can convert 50 files per folder.

About The Author:

Suman Rawat is a technical content writer and expert in the fields of email migration, data recovery, and email backup. Her passion for helping people has led her to resolve many user queries related to data conversion and cloud backup.


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