How can I read Thunderbird data into Outlook PST on MacOS? Download the latest Thunderbird Converter Mac toolkit, it helps you to complete the Thunderbird read Outlook PST MacOS process all along with complete Thunderbird profile data such as; Emails, AddressBook and Calendar items intact. Batch Thunderbird read Outlook PST MacOS process also can be done with no data loss, it save users valuable time and effort. Download the free Thunderbird Converter Mac toolkit, it supports 20+ files at a time.