EU Sovereignty Score
Self-hosted / open sourceBusiness Email & GroupwareHeadquarters: DE

KDE Kontact: sovereignty score and 8 European alternatives

Kontact is a personal information management suite from the KDE project. Its KMail component is an email client, and Kontact combines email, calendars and contacts in a single desktop window. The project describes it as a suite for handling all email, calendar and contact tasks in one place. It runs as a desktop application rather than a hosted service, so it is a desktop alternative to clients such as Microsoft Outlook. The latest KMail release, 6.8.2, was published on 8 October 2026.

KDE e.V., the non-profit association with its registered seat in Berlin, holds the KDE trademarks and supports the KDE community. The website is maintained by the KDE webmasters. KMail is licensed under GPL-2.0-or-later, so its source code is publicly available for review and modification. The project pages describe no hosted service. Mail and calendar data therefore reside on the servers the user connects to, and for a European organisation the software and its governance are German and non-profit, with no foreign parent company.

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Sovereignty score
94 / 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-390
    Self-hostable: encryption keys under your own control
  • Freedom from lock-in SOV-680
    Open source: low switching costs
  • Source & runtime sovereignty SOV-4 · SOV-6100
    Source code auditable, forkable and self-hostable

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 October 12, 2026
Headquarters
DE (EU)Verified by hand
Sovereignty model
Open-source, distributedVerified by hand
Data hosting
EUVerified by hand
Open-source
YesVerified by hand
GDPR-compliant
NoVendor-stated
Category
Business Email & Groupware
Type
Product
Website
kontact.kde.org ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to KDE Kontact

The European alternatives to KDE Kontact come from our knowledge base of over 7,800 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

36 European Business Email & Groupware vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with KDE Kontact

KDE Kontact 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 KDE Kontact scores best on data residency.

KDE Kontact is open source. You can audit the source code, self-host the software and keep the encryption keys under your own control. Switching is easier because data and software are not tied to a single party.

What this means for your organisation depends on your whole stack and context. The free assessment weighs KDE Kontact 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 KDE Kontact?

It depends on your use case. Strong EU alternatives to KDE Kontact include audriga, Axigen and Benno MailArchiv. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to KDE Kontact?

Yes. Open-source EU alternatives to KDE Kontact include Benno MailArchiv, CipherMail and Dovecot. These keep your data fully under your own control and let you self-host if you want to.

Is KDE Kontact GDPR-compliant and where is the data hosted?

KDE Kontact is headquartered in DE (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes KDE Kontact 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 October 12, 2026.

Sources

Public sources used in the latest check of this record.

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".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

Digital sovereignty in Business Email & Groupware

Business Email & Groupware: Business email servers, groupware, calendar and contact management. 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

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8 European alternatives to KDE Kontact — GDPR-compliant & EU-hosted · EU Sovereignty Score