EU sovereignSMS APIsHeadquarters: DK

GatewayAPI: sovereignty score and 8 European alternatives

GatewayAPI is a messaging platform built around an SMS gateway for businesses. It offers SMS APIs for sending and receiving messages worldwide, virtual numbers, short codes, keywords and number lookup, as well as RCS Business Messaging and email APIs including email-to-SMS. Integrations include SMPP connections, a free WordPress plugin, Zapier and Make. The service is delivered as a hosted platform and API.

GatewayAPI is an ONLINECITY.IO brand, a Danish company with its headquarters in Odense, Denmark, owned and operated by its co-owners; no foreign parent is named. The vendor offers an optional EU setup in which hosting and ownership are held within the EU, aimed at customers with special data requirements, and says an account provides a GDPR-compliant service with European data storage. It also states that it receives annual ISAE 3000 and ISAE 3402 auditor's statements on GDPR compliance. The software is proprietary and not open source, so it can only be used as a service run by the vendor.

See the 8 European alternatives ↓Assess your stack with GatewayAPI pre-selected

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 October 2, 2026

Headquarters	DK (EU)	Verified by hand
Sovereignty model	Vendor-hosted (EU)	Verified by hand
Data hosting	EU	Verified by hand
Open-source	No	Verified by hand
GDPR-compliant	Yes	Vendor-stated
Hosting signal	GOOGLE-CLOUD-PLATFORM - Google LLC, US (US)	Technically measured
Category	SMS APIs
Type	Product
Website	gatewayapi.com ↗

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 GatewayAPI

The European alternatives to GatewayAPI 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

33 European SMS APIs 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 GatewayAPI

GatewayAPI is headquartered in DK 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 GatewayAPI scores best on data residency.

GatewayAPI 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 GatewayAPI 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 GatewayAPI?

It depends on your use case. Strong EU alternatives to GatewayAPI include 46elks, Agile Telecom and AnyMessage. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to GatewayAPI?

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

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

GatewayAPI is headquartered in DK (EU) and hosts data in EU. That makes GatewayAPI 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 2, 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 SMS APIs

SMS APIs: API services for sending SMS messages to customers. 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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