Want to export Thunderbird to Office 365, if yes then you can take the help of MailsDaddy
Thunderbird to Office 365 Migration Tool. This popular solution has several useful features and conversion option by which any novice user can easily convert Thunderbird to Office 365, PST and Live Exchange mailbox.
The software is compatible with all Windows based operating system and helpful to export emails from Thunderbird to Office 365 Primary and In-place archive mailbox. User can also try the free demo edition first and convert 20 emails from each mailbox.