Posteo
Green, secure, simple, and ad-free email from Germany
About Posteo
Posteo is a privacy-focused email service from Berlin that emphasizes sustainability, data minimization, and transparent operations. Founded in 2009, this German email provider runs entirely on renewable energy and offers encrypted email, calendar, and contacts with no tracking or ads. Posteo requires no personal information to sign up and accepts anonymous payment methods.
Pros & Cons
Pros
- Extremely affordable at just €1/month with all core security and encryption features included
- True sustainability commitment with 100% renewable energy and carbon-neutral operations
- Strong privacy with no tracking, anonymous signup, anonymous cash payment, and encrypted metadata
- Open-source commitment with transparent operations and support for open standards
- Full IMAP/POP3/SMTP support works with any desktop or mobile email client
Cons
- No end-to-end encryption by default — requires manual Mailvelope browser extension installation
- No custom domain support for users who want branded email addresses
- No dedicated mobile apps — must use third-party email clients or webmail
- Limited customer support and fewer features compared to commercial alternatives
Key Features
PGP Encryption via Mailvelope
Optional end-to-end PGP encryption through browser extension for truly private email communication
Encrypted Calendar & Contacts
AES encryption for calendar entries and address book at the click of a button, with data encrypted/decrypted locally
Anonymous Account Creation
No name, address, or backup email required to create account — supports anonymous cash payments
100% Green Energy
Entire infrastructure powered by renewable energy from Greenpeace Energy with carbon-neutral operations
Two-Factor Authentication
TOTP app support and YubiKey hardware key compatibility for enhanced account security
Universal Protocol Support
Full IMAP, POP3, and SMTP support works with any email client including Thunderbird, Apple Mail, and Outlook
Encrypted Data Transit
TLS and DANE/TLSA encryption for all email transmission with mandatory SSL/TLS connections
Email Migration Service
Easy email import tool to transfer existing messages from other providers seamlessly
Pricing
- 4GB email storage
- 2 email aliases included
- Webmail with Dark Mode
- End-to-end encryption support
- Encrypted calendar (3 calendars)
- Encrypted address book
- IMAP/POP3/SMTP access
- 50MB attachment limit
- Expand up to 50GB maximum
- Per-gigabyte pricing
- Add to existing plan
Best For
Privacy-Conscious Individuals
Users prioritizing data protection who want email that doesn't track, profile, or monetize their communications with completely anonymous signup
Environmental Advocates
Eco-conscious users and organizations wanting email aligned with sustainability values, running on renewable energy
Budget-Conscious Secure Email
Students, freelancers, and individuals needing professional secure email without expensive subscriptions at just €1/month
European GDPR Users
EU-based individuals and businesses wanting email under strict German privacy laws with full GDPR compliance
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