Transfer your Yahoo mail to thunderbird mail with the Aryson Yahoo email backup tool. This professional tool allows you to convert Yahoo mail to many file formats. This powerful professional tool allows you to migrate Yahoo mail to many mail clients like Thunderbird, Outlook 365, Gmail, Yandex mail, etc. The powerful function of this tool allows you to backup up Yahoo mail with attachments. Moreover, this tool supports the 32bit and 64bit operating system