Posteo

Posteo is an email service provider offering paid email accounts for individuals and businesses based in Berlin, Germany. The service gained prominence during the aftermath of the Global Surveillance Disclosures., especially for its high standard security features and relative anonymity as it does not require any private information in the registration process.

Posteo offers support for DNSSEC/DANE and PGP (through Mailvelope in the web interface, which is running Roundcube). Additionally they offer two-factor-authentication via TOTP and use Extended Validation certificates and HPKP for the HTTPS connection.