GatewayAPI SMS
Global messaging platform with an SMS gateway for sending and receiving messages worldwide
GatewayAPI is an SMS gateway service operated by ONLINECITY.IO that provides outbound and inbound SMS messaging, RCS business messaging, and related APIs across more than 200 countries. It solves the challenge of integrating reliable, global text messaging into business applications, with EU-hosted data storage and annual ISAE 3000 and ISAE 3402 audit statements on GDPR compliance.
The platform offers a REST API with client libraries for languages including C#, Java, Node.js, PHP, Python, Ruby, and cURL, as well as an SMPP connection for high-volume sending. Additional modules include an Email API, Number Lookup API, virtual numbers, short codes, and keywords. Integration options cover Zapier, Make, Flowize, and a WordPress plugin with two-factor authentication, plus pre-built connectors for platforms such as Shopify, WooCommerce, Salesforce, Zendesk, Slack, and Google Sheets.
The service is designed for businesses of any size that need programmatic SMS or RCS messaging globally. Pricing is usage-based with no subscriptions by default; discounted rates are available for high-volume clients. A free test number is provided for testing RCS agents, and support is included without minimum spending requirements.
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