You can import .DOC, .DOCX, .ODT and .TXT files into Tettra from Google Drive. Formatting will even be carried over too. All it takes is a couple clicks.
Click New page
Click the ⋮ menu icon, then Import
Choose Google Drive then click Connect Google Drive. A new window will open to go through the Google Drive login flow.
Once you're connected, you can choose the Google Drive file you want to import.
Click Upload, and you're all set.