Logging in via Email is probably broken in the Mailman 3.0 release. AFAIR it has been fixed the main trunk. We suggest people to use the Persona Login instead of the email.

I fixed it in HyperKitty and released a new tarballs a few days later, it should be OK but it's not officially supported for 3.0. There are a few missing features, like password reset, etc. To login with the internal database, set USE_INTERNAL_AUTH to True in your settings file.

I agree that the "login with your email" header can be misleading, it made more sense with the old page layout, but not much now, I'll remove it.

Aurélien