How to Export Thunderbird Contacts to Outlook

Updated On - December 1, 2022 by Armaan |

Reading Time: 5 minutes

If you are looking for a solution for how to export Mozilla Thunderbird Address Book contacts to Microsoft Outlook, then this article is for you. This article talks about the manual methods and available third-party solution to efficiently export Thunderbird Contacts to Outlook. We will discuss manual and automatic method one-by-one, please keep reading.

Need to export Thunderbird Contacts to Outlook

A user might need to export Mozilla Thunderbird Address Book contacts to Outlook due to numerous reasons such as:

  • Switching for better facilities, features, security, and data management.
  • Outlook provides better emailing and calendaring events.
  • Outlook offers better security and privacy standards.
  • MS Outlook PST files offers more flexibility to users for managing their emails.
  • Outlook is easily accessible and available for all users worldwide.
  • The non-effective spam filtering forces users to migrate to Outlook.

Related Blog: Reasons to move from Thunderbird to MS Outlook

Manual Method to export Thunderbird Contacts to Outlook

Exporting Thunderbird Contacts to Outlook can be done in two ways:

  1. Export Thunderbird contacts to vCard (.VCF) file and then import contacts from vCard (.VCF) file to Outlook PST file.
  2. Export Thunderbird contacts to CSV file and then import contacts from CSV file to Outlook profile

In order to export Thunderbird Address Book Contacts to MS Outlook, perform the steps as discussed below:

  1. Launch Mozilla Thunderbird email client and click Address Book
  2. Or click Tools > Address Book.1
  3. Click Tools > Export.2
  4. Select vCard or Comma Separated (System Charset) (.CSV)in the File Type3
  5. Select a location and specify a name to the contact file.
  6. Click Save.

All the contacts of Thunderbird Address Book will be converted in Outlook compatible format.

  1. Launch Microsoft Outlook.
  2. Click File > Open & Export > Import/Export.4
  3. Import and Export Wizard Select Import from another program or file > click Next.5
  4. Import a File wizard appears. Select Comma Separated Values > click Next.6
  5. In the Import a File wizard, click Browse to select a .csv file in which you exported your Thunderbird contacts.
  6. Select any of the three available options on how Outlook should handle duplicate contacts:
  • Replace duplicates with items imported
  • Allow duplicates to be created
  • Do not import duplicate items

Click Next.


  1. Select the destination folder as Contacts folder under your Outlook account > click Next.8
  2. Select the checkbox to import desired file in Contacts folder > click Finish.9

After import, you will see that imported Thunderbird Address Book contacts are exported and are present in the Contacts category into Outlook.

Related Post: A Complete Guide to Export MBOX File to Mozilla Thunderbird

Limitations of Manual Method of exporting Thunderbird Contacts to Outlook

Manually exporting Mozilla Thunderbird Address Book Contacts to Microsoft Outlook has few limitations, some of them are:

  • Manual method is time-consuming and complex.
  • Requires technical knowledge and expertise to perform the manual conversion.
  • A single mistake in following the steps in correct order may corrupt the original contacts file.
  • There are chances of data loss.
  • Thunderbird installation is a must.
  • Multiple or bulk Thunderbird MBOX files migration is not possible.

Professional tool to import Thunderbird Contacts to MS Outlook

The third-party professional Regain MBOX Converter tool efficiently exports Thunderbird contacts to MS Outlook PST files. The tool maintains the integrity and folder structure without any limitation on MBOX file size. Upload multiple Thunderbird contacts files into Outlook in a single go. The software offers a split PST file option that allows users to set a specific file size for the resultant PST file.

Free Download100% Secure Buy NowPrice: $29

Eminent Features of Regain MBOX to PST Converter

  • Search feature helps locating Thunderbird contacts MBOX files in the system.
  • The tool supports .mbox, .mbx, and .mbs files of several email clients.
  • The software supports converting MBOX files into PST, EML, MSG, PDF, HTML, EMLX, and MHTML file formats.
  • Import Thunderbird mailbox to Office 365, Gmail, Yahoo Mail, GoDaddy and Live Exchange Server
  • Allows adding single as well as multiple MBOX files for migration.
  • Supports selective MBOX file migration.
  • Maintains folder hierarchy and structure while performing the migration.
  • Displays preview of MBOX email items before conversion.
  • Supports migration of even large-sized MBOX file.
  • Supports converting MBOX files supported by more than 25 email client like Mulberry, SeaMonkey, ThunderBird, Entourage, Spicebird, AppleMail, Eudora, Pocomail, Berkeley, Chaos Intellect, EathLink, Google Takeout, Netscape, The Bat, Turnpike, Opera Mail, Evolution, etc.
  • No Mozilla Thunderbird email client installation required.
  • Offers self-descriptive, easy-to-understand graphical user interface.
  • Compatible with all versions of Windows OS and Outlook versions.
  • Available as a free to download trial version.

Just 4 Steps and you are done exporting your Thunderbird Contacts to Outlook

  1. Download, install and launch Regain MBOX to PST Converter.
  2. Click Open and add MBOX file folder that you want to convert into PST format.
  3. Select added MBOX files and then click Export.
  4. Select a file format and desired location to save converted MBOX files.

The Thunderbird MBOX to Outlook PST Converter starts converting Thunderbird MBOX files and displays a live log report.

Final Words

This article is helpful for those Thunderbird users who want to export their Address Book contacts to Outlook. The article discusses the manual method to export Thunderbird contacts to Outlook. But since manual method has some limitations, we recommend using a professional MBOX to Outlook Converter software for accurate Thunderbird Contacts to Outlook conversion. Free to download demo version will let you check its capabilities with only a restriction that it will save only first 30 items per folder. Purchase full licensed to export contacts from Thunderbird MBOX files to MS Outlook PST files without any limitation.

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