If you want to convert Thunderbird emails to Outlook PST format for free, you can use eSoftTools Thunderbird Email Viewer Software. This tool lets you open and read Thunderbird MBOX files without installing the email client. It provides an easy way to access all emails, attachments, and folder structure, helping users view and manage data before exporting or converting it to PST format.
Although there are manual methods but because of the multiple limitations the migration becomes risky for important emails and large mailbox. However you can use the CubexSoft Thunderbird to PST Converter Tool which is a professional utility specially designed to convert bulk as well as individual Thunderbird emails to PST without losing any attachments and metadata. The tool offers direct file conversion, batch folder export, preserve the folder structure, multiple output options, and automatic mailbox detection, and also supports Windows and Mac OS. The tool also has a user friendly interface which let the users navigate throughout the process easily. It also a demo trial which let the users migrate up to 20 Thunderbird emails from the mailbox for free.