UI design is a little haphazard, long email overhanging boundaries, hamburger menus in the middle of the top nav. These small details build trust especially important for authentication.
Nice implementation of email based authentication
Lots of opportunity for polish improvements. Details matter for trust.
A cool idea and I'll be experimenting to integrate it with one of my projects.
Makes login much easier
Docs, and no apparent way to customize the button (language etc)