If you are searching a secure and reliable way for transferring PST to Thunderbird then I would recommend you to use the Advik PST Converter. With this utility, you can import PST to Thunderbird in just few simple clicks. It can transfer multiple PST files in a single attempt. It is designed with a simple graphical user interface. Both technical or non-technical users can easily operate it. You can download its free version to check its working procedure without any cost.
Steps to Import PST to Thunderbird
1. Run the tool on your system.
2. Add .pst file and click Next.
3. Choose mailbox folders.
4. Select Thunderbird as a saving option.
5. Click on Convert button to begin the process.
Steps to Import PST to Thunderbird
1. Run the tool on your system.
2. Add .pst file and click Next.
3. Choose mailbox folders.
4. Select Thunderbird as a saving option.
5. Click on Convert button to begin the process.