I was using Autistici/Inventati, but it seems they are being shut down suddenly, so I’m looking for a migration target. Riseup would be ideal, but apparently it requires an invitation. I’m looking for an email provider that meets all of the following criteria:
Allows anonymous registration
Works with Thunderbird
Account management possible without JavaScript
Inbox encrypted by default
Encryption keys managed by the user themselves, not the provider
POP support
Has a Warrant Canary
Free of charge
If you happen to know of a provider like this, please let me know — it would be a great help.