EU Sovereignty Score
Non-EU vendorTransactional EmailHeadquarters: GB

AuthSMTP: sovereignty score and 8 European alternatives

AuthSMTP is an outgoing SMTP relay service that sends email on behalf of websites, mailing lists and applications. Customers point their software at the AuthSMTP SMTP endpoint, authenticate with their own credentials and manage their account through a control panel and an administrative REST API. The service also includes port and authentication checkers, and outgoing messages are scanned for viruses before delivery. It is a hosted service, so the customer does not install any software.

AuthSMTP is operated by GetOnline Ltd, a company registered in the United Kingdom. The terms of service refer to both English law and European Union law. The service privacy policy names Cloudflare as a sub-processor with global infrastructure, including data centres in the United States, the EU and the United Kingdom. The vendor does not state where the data centres of its relay infrastructure are located. Because the provider is established outside the EU, a European organisation should check where its outgoing email is processed and which sub-processors are involved. The vendor does not describe the service as open source or self-hostable.

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Sovereignty score
32 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-250
    Headquartered outside the EU (GB)
  • Data residency SOV-30
    No hosting in Europe (OTHER)
  • Cryptographic key sovereignty SOV-340
    Key management with a non-European vendor
  • Freedom from lock-in SOV-640
    Closed source: switching requires data migration
  • Source & runtime sovereignty SOV-4 · SOV-630
    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 October 11, 2026
HeadquartersGB (OTHER)Verified by hand
EU adequacy decisionYes — found adequate by the European CommissionVerified by hand
Sovereignty modelVendor-hosted (non-EU)Verified by hand
Data hostingOTHERVerified by hand
Open-sourceNoVerified by hand
GDPR-compliantYesVendor-stated
CategoryTransactional Email
TypeProduct
Websiteauthsmtp.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to AuthSMTP

The European alternatives to AuthSMTP 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

17 European Transactional Email 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 AuthSMTP

AuthSMTP is headquartered in GB, outside the EU. Contracts and data therefore also fall under non-European law. The GDPR applies through contractual terms, but in a conflict with local legislation you have less certainty than with a European vendor.

AuthSMTP hosts data outside the EU (OTHER). Personal data therefore leaves the EU, which requires a transfer mechanism under the GDPR and pulls the data residency score down.

AuthSMTP 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 AuthSMTP 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 AuthSMTP?

It depends on your use case. Strong EU alternatives to AuthSMTP include AhaSend, Elastic Email and EmailConnect. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to AuthSMTP?

Our list of EU alternatives to AuthSMTP is mostly commercial options. Browse the category on the map for open-source choices.

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

AuthSMTP is headquartered in GB (OTHER) and hosts data in OTHER. The vendor states it is GDPR-compliant, but the data falls under non-EU jurisdiction. 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 Transactional Email

Transactional Email: Services for sending transactional emails from applications via API or SMTP relay. 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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8 European alternatives to AuthSMTP — GDPR-compliant & EU-hosted · EU Sovereignty Score