EU Sovereignty Score
EU sovereignEmail (Personal)Headquarters: DE

Posteo: sovereignty score and 8 European alternatives

Posteo is a German email provider for individuals and businesses. An account includes email via webmail, IMAP and POP3, a calendar, address book and notes, synchronised over CalDAV and CardDAV. No personal details are required to sign up. The service supports transport encryption (TLS, DANE), PGP and S/MIME, two-factor authentication (TOTP) and optional encryption of stored data, calendars, address books and notes. It has spam and virus filtering and a free migration service. Posteo is delivered as software as a service and carries no advertising.

Posteo is based in Berlin and describes itself as independent and financed entirely by its users. According to the company, its servers are in secured German data centres and it runs on green electricity from Green Planet Energy. Posteo reports BSI certification under TR-03108. No foreign parent company is named. The service itself is not described as open source. For a European organisation, Posteo is a provider with its headquarters and data storage in the EU, under German law and the GDPR.

See the 8 European alternatives ↓Assess your stack with Posteo pre-selected
MastodonLinkedInBlueskyXEmail
Sovereignty score
71 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in the EU: European law applies
  • Data residency SOV-3100
    EU-only hosting
  • Cryptographic key sovereignty SOV-360
    Key management with a European vendor
  • Freedom from lock-in SOV-640
    Closed source: switching requires data migration
  • Source & runtime sovereignty SOV-4 · SOV-655
    Closed source, runtime with the vendor

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked July 2, 2026
HeadquartersDE (EU)Verified by hand
Sovereignty modelVendor-hosted (EU)Verified by hand
Data hostingEUVerified by hand
Open-sourceNoVerified by hand
GDPR-compliantYesVendor-stated
Compliance documents3 published, see belowVendor-stated
Hosting signalINTERNET_AG - INTERNET AG Global Network, DE (DE)Technically measured
CategoryEmail (Personal)
TypeProduct
Websiteposteo.de ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Posteo

The European alternatives to Posteo come from our knowledge base of over 6,200 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

30 European Email (Personal) vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

Is Posteo one of many dependencies?

Score your whole stack in about three minutes. Free, no account needed.

Assess your stack →View a sample report (opens in a new tab)

Why digital sovereignty matters with Posteo

Posteo is headquartered in DE and therefore falls under European law: the GDPR, NIS2 and the Data Act. No foreign legislation can compel access to your data.

Data is hosted exclusively in the EU, so Posteo scores best on data residency.

Posteo is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Posteo together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to Posteo?

It depends on your use case. Strong EU alternatives to Posteo include Bluewin Mail, CounterMail and Disroot. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Posteo?

Yes. Open-source EU alternatives to Posteo include Disroot. These keep your data fully under your own control and let you self-host if you want to.

Is Posteo GDPR-compliant and where is the data hosted?

Posteo is headquartered in DE (EU) and hosts data in EU. That makes Posteo an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on July 2, 2026.

Sources

This record was checked via the vendor's website and legal notice during the full audit of June and July 2026. Source links have been recorded per record since 20 September 2026.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

Data Processing Agreement (DPA)
posteo.de/en/site/privacy_policy
Security page / trust center
posteo.de/en/site/security
EU hosting documented
posteo.de/en/site/about

Provenance of the links above:Vendor-stated

Links checked on September 21, 2026.

Digital sovereignty in Email (Personal)

Email (Personal): Personal email services — inbox, calendar, contacts. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

Also in this category

See all →
Open in the alternatives dashboardMissing a vendor? Submit itAre you this vendor? You can also become a sponsor on the Email (Personal) page — with no effect on your score
8 European alternatives to Posteo — GDPR-compliant & EU-hosted · EU Sovereignty Score