With the use of SysInfo Thunderbird Backup Tool, you can effectively export Thunderbird emails to EML, PST, PDF, MSG, and many other file formats with or without email attachments. It has the option to migrate the Thunderbird emails to multiple kinds of email clients, such as Gmail, Yahoo Mail, IMAP, Zoho Mail, etc., without affecting the crucial data. You can preview your Thunderbird emails before executing the process. Moreover, it has the function to delete the similar Thunderbird emails based on different criteria throughout the process. This utility properly works on all Windows OS versions, including Windows 11.