Simple Tips to Import Thunderbird Mail to Outlook 2019

Mozilla Thunderbird

and MS Outlook are the most popular email client for Windows Operating system.

The big organizations use Outlook as the default email client while Thunderbird

is preferred by individual users and small industries.

In this article,

we will discuss why a user should import Thunderbird to Outlook and the

complete process to do so. But before that, let’s compare Thunderbird and

Outlook first.

Comparison b/w Mozilla Thunderbird and MS Outlook

Mozilla Thunderbird

  • It

    is a free and open source email client.

  • Runs

    on Windows, Mac and Unix OS.

  • Stores

    mailbox data in MBOX file format with no extension.

  • Supports

    all standard protocols: IMAP, POP, SMTP

  • Lacks

    advanced security features.

  • No

    native support for Exchange server.

  • Not

    available for mobile platforms.

Microsoft Outlook

  • Needs

    to be purchased. Also comes as a part of Office 365.

  • Runs

    on Windows and Mac OS.

  • Stores

    mailbox data in PST or OST file format.

  • Supports

    all standard protocols: IMAP, SMTP, POP.

  • Advanced

    security features.

  • Support

    for Exchange server.

  • Available

    on mobile platforms.

Why Import Thunderbird Mail to Outlook?

For home users,

Mozilla Thunderbird is more than enough. But it cannot comply all the needs of

an organization. Due to lack of funds, a small organization may use

Thunderbird, but it quickly shifts to MS Outlook once the scalability


  • Outlook

    and Exchange have the same developers – Microsoft. Therefore, both applications

    are integrated to work with each other flawlessly. Since, many medium to big

    organizations use Exchange, MS Outlook automatically becomes the favorable

    email client.

  • Outlook

    offers more advanced security features than Mozilla Thunderbird.

  • Outlook

    can be accessed on mobile platforms which enables a user to work on the go.

How to Migrate Thunderbird to Outlook?

Users can opt for

any of the two methods explained below. The first method is divided in 3

sections while the second method is a professional software.

Method I. Import Thunderbird to Outlook via IMAP

You will need a

Gmail account for this method. So, create a new Gmail account and then follow

the given steps:

Step 1: Enable IMAP & Less Secure Apps

  1. Log in to the Gmail account, click Gear icon and select Settings option.

  2. Click Forwarding

    and POP/IMAP

  3. Check Enable


  4. Click Save


  5. Now, go to

  6. Click Security.

  7. Allow less

    secure app access

Step 2: Configure in Thunderbird and Import Emails to Gmail

  1. Run Mozilla Thunderbird and go to Tools menu.

  2. Select Account


  3. Click on Account

    from the bottom-left and select Add Mail Account.

  4. Enter the Gmail credentials and click on Continue button.

  5. Make sure that IMAP box is checked and click

    on Done button.

  6. The account is configured.

  7. Create

    a new folder
    in the

    newly configured Gmail account.

  8. Select all the Thunderbird emails that you want to

    import into Outlook.

  9. Right-click on Copy To, select the new folder in Gmail account.

  10. The emails are copied into the Gmail account.

Simply open the

Gmail account on your browser to check all the Thunderbird emails are

successfully copied.

Step 3: Configure in Outlook and access Thunderbird emails

  1. Open MS Outlook.

  2. Click File

    menu and select Account Settings

    >> Account Settings.

  3. Click on New

    to open the Add Account Setup


  4. Enter the credentials and click Next.

  5. Outlook will validate the account and click Finish.

  6. Once the account is configured, open the

    Thunderbird emails.

  7. Copy all the emails and move them into any

    Outlook folder.

  8. This takes care of the import process.

Note: This method is very time consuming and not

feasible for a non-technical person.

Method II. Import Thunderbird Mail to Outlook with Software

Email migration is a difficult task. To simplify the things and make the process easier, users can try professional software Quickdata MBOX to PST Converter. It is the one of the best tool to convert Thunderbird emails to Outlook PST format. There are multiple file formats to export: PST, PDF, NSF, EML, MSG, and HTML.

  1. Download and Install the conversion software.

  2. Click the Add File button and select the Thunderbird option.

  3. Choose Default Profile Configured and click Next.

  4. Select the email accounts configured in the Thunderbird client and click Process.

  5. The software will preview the Thunderbird emails.

  6. Next, select the PST format and click the Export button to start conversion.

You can watch the

short video to understand the working of the software:

Users can try the

free demo version of the converter software that export first 20 emails per

folder. Once you convert Thunderbird emails to PST and import them in MS

Outlook. For importing, use the native Import/Export

option in File >> Open &


Frequently Asked Questions

Q. What are the Outlook versions that I can

import Thunderbird emails into?


Users can import Thunderbird to Outlook 2019, 2016, 2013, 2010, 2007 & 2003

with both the two methods.


I don’t have the Thunderbird application installed but have the Thunderbird

MBOX files. Can I convert them into Outlook?


Yes, you can. While the first method requires Thunderbird, the second method

has the option to directly import MBOX files and convert them into PST for


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