Posteo

Posteo is a privacy-focused email provider founded in 2009 by Patrik and Sabrina Lohr in Berlin, Germany. From its inception, Posteo has been committed to three core principles: privacy, sustainability, and simplicity. The service is powered entirely by 100% renewable energy from Greenpeace Energy and operates on a lean, independent business model without venture capital, advertising, or tracking.

The platform provides ad-free email with support for PGP and S/MIME encryption, calendar and contacts via CalDAV and CardDAV, two-factor authentication with TOTP, and incoming encryption that automatically encrypts arriving emails with the user's public key. Posteo allows truly anonymous registration without requiring a name, backup email, or phone number, and accepts anonymous payment methods including cash by mail. The service supports IMAP and POP3 for use with standard email clients.

As one of the most privacy-conscious email providers in Europe, Posteo has won multiple awards including the German eco-label "Blauer Engel" for environmentally friendly email services. The company publishes annual transparency reports detailing law enforcement requests. With servers located exclusively in Germany and a strong commitment to minimizing data collection, Posteo is a trusted choice for environmentally and privacy-conscious users seeking an affordable, no-compromise alternative to data-harvesting email services.