How to Export Thunderbird Address Book to Outlook PST Format?

  •   Written By
  • Published on
    October 17th, 2019
  • Updated on
    February 20, 2021
  • Read Time
    4 minutes
Rate this post

The popularity of Microsoft Outlook is growing exponentially day by day, a lot of users have exported their existing email accounts to Outlook. But we cannot deny the fact that email migrations are quite tedious and challenging to complete. Even when there is involvement of two popular email clients like Mozilla Thunderbird and Outlook. So, what encourages users to undertake them and is there any simple way to export Thunderbird Contacts to Outlook without any loss? Well, this query can be answered as you move further with this blog.

win download download

Why there’s a need to Migrate from Thunderbird Contacts to Outlook?

  • The MS Outlook is much more popular than Thunderbird when it comes to features and compatibility with different platforms.
  • Managing users’ personal information is much easier with Outlook
  • The Outlook is more user-friendly and flexible than Thunderbird
  • MS Outlook allows configuring multiple email accounts within a single interface simultaneously.
  • Outlook provides the facility to access mailbox data even if it is not connected to the mail server.

When a user switches from Mozilla Thunderbird to Outlook email client. Contacts and Emails are the two most important things that need to be considered while exporting from Thunderbird to Outlook. And sometimes the user only wants to export Thunderbird address book to MS Outlook. Here, in this article, we have come up with a solution that guides users to move contacts in Outlook from Thunderbird. There are two procedures involved to move contacts from Mozilla Thunderbird.

  1. Export Thunderbird Contacts to CSV format
  2. Import CSV into MS Outlook

#1 Export Mozilla Thunderbird Contacts to CSV format

Follow the below-mentioned steps to export Thunderbird contacts to CSV format:

  1. Firstly, open Thunderbird email client and go to Address Book option from the address book
  2. Now, select contacts that you want to migrate to the CSV format.
  3. Then, click on the Tools option and select the Export option.
  4. Select a particular location in your system where you want to save the contacts.
  5. Provide a file name and select the CSV file format in Save As type.
  6. Finally, click on the Save option.

After saving the Thunderbird address book in CSV format, you are required to move this file to your Windows machine either by emailing or by using a pen drive.

#2 Steps to Import CSV file in MS Outlook 

Once the users have extracted contracts from Thunderbird in CSV format, they need to move the CSV file in MS Outlook. Just follow the below-mentioned procedure:

  1. Move to the MS Outlook application.
  2. Go to the File menu > Open & Export > Import/Export
  3. Then, choose Import from another program or file and click on the Next button.
  4. Select Comma Separated Values (Windows) then click on the Next button.
  5. Go to the Browse option, choose CSV file which you have exported from Thunderbird.
  6. Next, choose one option from the available ones to deal with duplicate values. Click on the Next button.
  7. Now you have to choose the Contacts folder to move contacts. Click on the Next button.
  8. Click on the Finish button and the process of importing contacts will start.

Drawbacks of Manual Method

While the above manual process to export Thunderbird contacts to Outlook is simple enough to perform still, it suffers from a few limitations:

  • The procedure takes a longer time.
  • It doesn’t include exporting emails.

So, to overcome these limitations, we suggest that you use a much more efficient method to export contacts from Thunderbird to Outlook. MBOX to PST Converter by SysInfo is one such expert solution that you can opt for. Along with the obvious method of being a fully automated and safe method to perform the export, this software lets you export complete MBOX data to PST format in one go.

It is one of the powerful utility that helps you export all mailbox contents like emails, attachments, contacts, notes, journals, etc. from Thunderbird to Outlook PST format. The tool is equipped with a highly interactive interface and is the best alternative to manual conversion methods.


The above blog is describing the best solutions to export Thunderbird contacts to Outlook. All the methods have been described in detail. Though manual approaches are almost always available, the safest and most hassle-free way is often through reliable software.

Related Post