GatewayAPI
GatewayAPI is a Danish SMS gateway providing a global API for sending A2P text messages.
GatewayAPI is operated by ONLINECITY.IO, headquartered in Odense, Denmark, with roots going back to 1999. It is a CPaaS and SMS gateway used by tens of thousands of customers worldwide to send application-to-person SMS messages.
GatewayAPI provides a documented REST API with high throughput, direct routes to telecom networks, two-way messaging and webhooks, while keeping its platform and billing within the EU. As a Danish, EU-based provider, it is a solid alternative to Twilio for European developers who want dependable SMS delivery and European data residency.
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