Epyrus • Address Book?

Love the simple old Thunderbird feel of Epyrus, Thunderbird itself I find way over complicated these days and constantly struggle with, so thanks!

Is there a way I can import the address book from Thunderbird? It has no export option and seems to store it in a .sqlite format, and there is no option to import that. Alternatively is there a way to automatically create an address book with all the email addresses from the inbox, so when I type in an email address it will auto complete?