Posteo

Key Features

• Single transparent price: EUR 1/month for a full-featured account with 2 GB storage (expandable to 20 GB at EUR 0.25/GB/month); no tiered pricing complexity
• Crypto Mail Storage encrypts all saved emails (content, attachments, and metadata) with one click using AES; supports inbound encryption with S/MIME or OpenPGP; end-to-end encryption via Mailvelope browser plugin
• Maximum privacy: allows anonymous signup, accepts cash payment by physical mail, does not link payment data to accounts, and strips IP addresses from outgoing emails
• 100% powered by renewable energy from Greenpeace Energy (Green Planet Energy); uses GLS ethical bank; office in a repurposed Berlin Kreuzberg brewery — sustainability is core to the business model