Thunderbird is a free open source email client produced for Windows, MAC, and Linux operating methods. This email client has been extensively used worldwide for Personal as well as Enterprise persistence. To
Transfer Thunderbird Email to a New Computer
you have to copy your profile folder to the desired location on your destination computer. To step by step guide you should read the mentioned solution.
1. Manual Method
2. Expert solution
you may determine a suitable one and move your Thunderbird emails to Outlook PSt format hassle-free. Hope mentioned solution provides you with enough information.