Self-hosted / open sourceBusiness Email & GroupwareHeadquarters: US

MDaemon: sovereignty score and 8 European alternatives

MDaemon is an email server that organisations use to deliver, secure and archive business email. The vendor offers it as software installed on the customer's own physical servers, virtual machines or leased infrastructure, and as a hosted service with managed infrastructure, which includes the SecurityGateway filter. Service providers can license the software for their own deployments. The company was previously called Alt-N Technologies.

The operating company is MDaemon Technologies, Ltd. The website gives no street address or headquarters location; support hours are listed in US Central Time. No parent company is named. The website does not say where hosted customer data is stored. An organisation that runs MDaemon itself keeps control over where its mail is stored. For on-premise deployments, the vendor's GDPR page states that responsibility for GDPR compliance lies with the user of the software. European organisations should have the storage location of any hosted option fixed in the contract.

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Sovereignty score

55 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-210
Headquartered in the US: CLOUD Act and FISA 702
Data residency SOV-3100
No hosting in Europe (US)
Cryptographic key sovereignty SOV-380
Closed source, but self-hostable: encryption keys and runtime under your own control
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-645
Closed source, but self-hostable on your own infrastructure

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 11, 2026

Headquarters	US (US)	Verified by hand
EU adequacy decision	Only for companies individually certified under the EU-US Data Privacy Framework	Verified by hand
Data hosting	Self-hosted, e.g. in US (your choice)	Verified by hand
Open-source	No	Verified by hand
GDPR-compliant	No	Vendor-stated
Category	Business Email & Groupware
Type	Product
Website	mdaemon.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to MDaemon

The European alternatives to MDaemon 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

28 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 MDaemon

MDaemon is headquartered in the United States. US vendors fall under the CLOUD Act and FISA 702: US authorities can compel access to data, even when that data sits in a European data centre. That is the core of the jurisdictional exposure in our model.

MDaemon runs on infrastructure you choose and control yourself. You decide where the data lives, including fully within the EU if you want — this is not a fixed hosting choice made by the vendor.

MDaemon is closed source, but you run the software yourself on your own infrastructure. The encryption keys and the runtime therefore stay under your own control, though you cannot audit or modify the source code. Ask about export options and open standards to limit software-level lock-in.

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

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

Are there open-source alternatives to MDaemon?

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

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

MDaemon is headquartered in US and hosts data in US. Its GDPR compliance is limited or unclear. For full EU data residency the EU alternatives on this page usually offer more certainty.

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 11, 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.

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