Thunderbird Backup Tool is the most trusted and secure utility that saves Thunderbird mailbox items to multiple file formats such as PST, PDF, EML, EMLX, MSG, CSV, JPG, HTML, etc. It also offers to safely migrate MBOX files or folders to several email clients like Gmail, Yahoo Mail, Hotmail, Office 365, IMAP, Zoho Mail, etc. Moreover, the utility allows you to save your email attachments separately. Additionally, they are easily comfortable with all versions of the Windows operating system. To analyze the performance you can download it.