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Posteo

✓ Verified by EU Alts

Ad-free, green-powered encrypted email from Germany — an ethical alternative to Gmail.

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Overview

Posteo is a Berlin, Germany-based European company building email and privacy software since 2009. As an EU-headquartered provider, Posteo likely operates under GDPR. EU Alts has not independently confirmed its exposure to the US CLOUD Act — the ownership and hosting facts recorded for it do not establish that it is outside the Act's reach — see the Details section below for what's known so far.

Why European teams pick Posteo

Teams in Europe consider Posteo when they want a email provider that bills in EUR, operating since 2009. Its EU headquarters is a good sign compared with Gmail, but EU Alts has not independently verified Posteo's exposure to the US CLOUD Act — check the Details section for the recorded facts.

See more EU email tools or browse other startups from Germany.

About

Posteo is an independent email provider from Berlin offering encrypted, ad-free email powered 100% by renewable energy. No personal data is collected and payment can be made anonymously.

Details

Founded
2009
Headquarters
Berlin, Germany
Ownership
Independently owned (Germany)
Hosting
Own-operated servers in leased German data centers (no public cloud provider), Germany
CLOUD Act
Not independently verified
Verified
2026-07-31
Last checked
2026-07-31
Company size
11–50 employees

Categories

Compare with the US product you may be replacing

Posteo is listed in a category that our US-product comparison pages cover. See every EU option side by side:

Also from Germany

7 other listed companies are based in Germany. In the same categories as Posteo:

Other EU startups like Posteo

  • Mailbox.org ✓ Verified by EU AltsGermany — Secure German email, calendar and cloud office — a privacy-focused alternative to Gmail.
  • Tuta ✓ Verified by EU AltsGermany — End-to-end encrypted email and calendar — a German privacy-first alternative to Gmail.
  • Proton Mail ✓ Verified by EU AltsSwitzerland — End-to-end encrypted email and productivity suite — a privacy-first alternative to Gmail.
  • Mailo ✓ Verified by EU AltsFrance — French email service with calendar and contacts — a privacy-respecting alternative to Gmail.
  • Notesnook ✓ Verified by EU AltsGermany — Zero-knowledge encrypted note-taking app — an alternative to Evernote.
  • Cryptomator ✓ Verified by EU AltsGermany — Client-side encryption for your cloud files — a German open-source alternative to Boxcryptor.

Frequently asked questions

What does Posteo do?

Posteo is ad-free, green-powered encrypted email from germany — an ethical alternative to gmail. It is listed under email and privacy on EU Alts because its core functionality serves teams looking for a European email tool with EU data residency, typically as a switch away from Gmail.

Is Posteo GDPR compliant?

Posteo is headquartered in Berlin, Germany and falls under EU jurisdiction, so it likely processes user data under the GDPR by default. Customer data processing is supervised by Germany's data protection authority, the Bundesbeauftragte für den Datenschutz und die Informationsfreiheit (BfDI). EU Alts has not independently verified Posteo's exposure to the US CLOUD Act, so we can't confirm it either way.

How do teams switch from Gmail to Posteo?

Teams considering a move from Gmail to Posteo are usually drawn by its email workflow fit. EU Alts has not independently verified Posteo's exposure to the US CLOUD Act, so treat any CLOUD Act or Schrems II conclusions as provisional. Plan a migration in stages regardless: export your data from the US incumbent, pilot Posteo with a small team, then move the rest once integration coverage is confirmed.

Where is Posteo based?

Posteo is headquartered in Berlin, Germany. The company was founded in 2009. Its main website is https://posteo.de.