Posteo e.K. review
Updated October 12, 2026 · ShieldCue Editorial Team
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Our verdict
Posteo e.K. differs from advertising funded mailbox providers by offering mail, calendars and contacts built around privacy and sustainability. For readers who want everyday communication without tracking or user profiling, it provides straightforward tools with optional encryption for stored information.
Key facts
- Best for
- Private mail for sustainability minded users
- Monthly price
- €1 (Source, checked September 26, 2026)
- Jurisdiction
- DE (Source, checked September 26, 2026)
- Protocols
- IMAP, POP3, CalDAV, CardDAV, TLS, DANE, PGP, S/MIME (Source, checked September 26, 2026)
- Platforms
- Web app, iOS, Android (Source, checked September 26, 2026)
- Owner
- Posteo e.K. (Source, checked September 26, 2026)
- Legal entity
- Posteo e.K. (Source, checked September 26, 2026)
- Headquarters
- Germany (Source, checked September 26, 2026)
- Founded
- 2009 (Source, checked September 26, 2026)
- Support channels
- Email, Help-centre (Source, checked September 26, 2026)
- Pricing model
- Budget
- Official website
- posteo.de
Secure email
- Price from
- €1 (Source, checked September 26, 2026)
- Free plan limits
- No free plan and no trial account (Source, checked September 26, 2026)
- End-to-end encryption
- Individual emails in webmail via S/MIME or OpenPGP: content and attachments, metadata not encrypted (Source, checked September 26, 2026)
- Jurisdiction
- DE (Source, checked September 26, 2026)
- Custom domains
- No (Source, checked September 26, 2026)
- Open source
- Yes (Source, checked September 26, 2026)
- Legal entity
- Posteo e.K. (Source, checked September 26, 2026)
- Headquarters
- Germany (Source, checked September 26, 2026)
- Founded
- 2009 (Source, checked September 26, 2026)
- Support channels
- Email, Help-centre (Source, checked September 26, 2026)
- Pricing model
- Budget
Apps and profiles
- Elsewhere
- WikidataWikipediaXgithub.com
Pros and cons
Pros
- Synchronised mail with scheduling and contacts plus optional encryption throughout
- Registration asks for no personal details and avoids tracking or profiling
- Sustainability focus with green power, public transport support and nonprofit donations
- Works with common mail apps through open standards for mail and sync
Cons
- Focused mail service rather than a broad office productivity suite
- Advanced encryption choices need setup and compatible apps to use well
Who it suits
- People seeking mail without advertising or profiling
- Readers valuing data minimisation and sustainable operations
- Beginners and experts wanting flexible encryption choices
Who should look elsewhere
- People wanting a broad office productivity suite
- People wanting social features alongside mail
Privacy and jurisdiction
Privacy protection rests on collecting no personal details at registration and keeping payment details separate from accounts. Tracking and user profiling remain absent, and customer information receives no commercial trade. Personal Internet addresses remain unstored, which limits exposure in case of misuse. Transport protection uses common mail security standards with mandatory enforcement for incoming and outgoing delivery. Stored mailbox content, calendars, contacts and notes can remain encrypted for additional control. Access supports a second verification step, backed by security backups and filtering for spam and viruses.
How Posteo e.K. compares
Frequently asked questions
What does Posteo offer?+
Posteo offers mail alongside calendars, address books and notes that synchronise across devices. Webmail keeps daily use convenient, while open standards connect familiar apps for mail and synchronisation. Calendars allow sharing and file exchange, and contacts allow file exchange for moves between services.
Where does Posteo operate from?+
Posteo operates core systems from highly secured data centres in Germany. Infrastructure uses green power and appropriately sized servers to conserve resources. Programming tuned for efficiency lowers energy demand while supporting everyday synchronisation across devices.
How does Posteo protect privacy?+
Posteo collects no personal details at registration and keeps payment details separate from accounts. Tracking, profiling and trading of customer data stay absent to support self determination. Personal Internet addresses remain unstored, and stored information can use optional encryption.
What encryption choices does Posteo provide?+
Posteo applies mandatory transport protection for incoming and outgoing mail using common security standards. Inbound messages accept established formats for private delivery, while stored mailbox content can remain fully encrypted. Webmail includes key management with a directory, plus optional encryption for scheduling and contacts.
Which platforms does Posteo e.K. support?+
Posteo e.K. supports Web app, iOS, Android. (Source, checked September 26, 2026)
Where is Posteo e.K. based?+
Posteo e.K. is based in Germany. (Source, checked September 26, 2026)
When was Posteo e.K. founded?+
Posteo e.K. was founded in 2009. (Source, checked September 26, 2026)
How can I contact Posteo e.K. support?+
Posteo e.K. offers support through Email, Help-centre. (Source, checked September 26, 2026)
Sources
- posteo.de checked September 26, 2026
Backs: Platforms
“Synchronise via CardDAV (iOS, Android, ...)”
- posteo.de/en/site/about_posteo checked September 26, 2026
Backs: Founded, Open source
“Posteo was founded in 2009.”
- posteo.de/en/site/encryption checked September 26, 2026
Backs: End-to-end encryption
“It does not protect: Email metadata (such as the date, time, subject line) remain unencrypted”
- posteo.de/en/site/faq checked September 26, 2026
Backs: Custom domains, Free plan limits
“No. We are an email provider with a particular, privacy-oriented model - and this is not compatible with incorporating own domains.”
- posteo.de/en/site/featurelist checked September 26, 2026
Backs: Pricing model, Owner, Price from, Monthly price, Protocols, Support channels
“Your email account for 1 Euro per month”
- posteo.de/en/site/legal_notice checked September 26, 2026
Backs: Headquarters, Legal entity
“Methfesselstr. 38 10965 Berlin Germany”
- posteo.de/en/site/terms checked September 26, 2026
Backs: Jurisdiction
“The complete legal relationship between Posteo and its customers is exclusively governed by the law of the Federal Republic of Germany.”
Compiled from 7 source pages, checked October 13, 2026. We did not open an account.
Not confirmed yet: Long-term plan price, Devices, Server countries, No-logs audit.