I bought a full fast mail account to try it out. It seemed pretty insecure coming from protonmail. They require location data for example. No need for that I can think of for the user. They also don’t do E2E or even what passes for e2e. I wasn’t super impressed at the time. I’ll have to log back in and see if any of it changed.
They haven’t asked for location data for me in iOS. It’s a different intent to proton mail. Most emails I send are not end to end encrypted as the other end wouldn’t accept it. For any E2E encryption needs I use proton or a messenger service.
Australia also seems to be a terrible place for privacy, at least policy-wise.