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Written By
Sachin Prajapati -
Updated on
January 28th, 2026 -
Read Time
5 minutes
Summary: For individuals managing multiple Outlook accounts, juggling between them is frustrating. Hence, the user decides to import Outlook contacts to Thunderbird and simplify the contact management. But, how is it done? Go through this blog till the end to find out the simplest tool-driven method, using PST Converter Tool. Moreover, the user has the choice to go for manual solutions as well. But keep in mind that the manual solutions are not reliable. Now, let’s get started with the blog right away.
Importing contacts from Outlook to Thunderbird offers cross-platform compatibility and improved searchability. Take a look at a few of the reasons below:
In this method, we will export Outlook contacts in a CSV file and then import them into Thunderbird. The CSV file format will include a large list of contacts to be imported.
Step 01: Export Contacts from Outlook
Step 02: Import Contacts into Thunderbird
Limitations: If the manual mapping is done incorrectly, the data will be mapped in the wrong fields. There can be formatting issues in case of complex characters. Also, there is no real-time synchronization. It is a one-time export/import process.
This manual method involves transferring contacts in a vCard file. A vCard file format is primarily used for contact sharing and helps transfer smaller batches of contacts from Outlook to Thunderbird.
Step 01: Export Contacts from Outlook
Step 02: Import vCard Files into Thunderbird
Limitations: Importing hundreds of contacts manually can be time-consuming and tedious. Some Outlook versions do not support selecting multiple or bulk vCard files for export.
Easily Import Outlook Contacts to Thunderbird in bulk using the reliable PST Converter. The tool supports bulk contact migration and extends its functionality to export data to other platforms like Gmail, Hotmail, and many others. It provides multiple file format options to maintain compatibility across different clients. Moreover, the tool is designed with advanced features that allow you to migrate single and multiple PST emails, contacts, calendars, journals, notes, and tasks at once into different formats, such as exporting Outlook emails to Excel. With features like batch conversion, smart filters, and duplicate email removal, the software saves significant time. Additionally, its preview option allows you to confirm contact details before conversion.
After saving the PST contacts file locally, follow these steps to import contacts from Outlook to Thunderbird:
In this blog, we examined the factors users consider when moving from Outlook to Thunderbird. It outlines an expert automated solution and provides a step-by-step manual approach to import Outlook contacts to Thunderbird. For users handling only a few contacts, a manual method has also been explained. This gives users the option to pick the approach that meets their specific requirements.
You May Also Read: Import PST Files into Thunderbird
A: Most details like name, email, phone number, and address are preserved. However, some custom fields or attachments may not transfer correctly in CSV format.
A: Thunderbird cannot open PST files directly. You need to extract contacts from the PST using Outlook or a PST Converter before importing them.
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