GatewayAPI

5.1easy start · #76 of 77
in Transactional SMS Software

Free to practise onnot on record
Free trialnot on record
Well documentednot on record
Runs where you worknot on record

Runs on api, Web.

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GatewayAPI is ranked #76 of 77 in transactional SMS software on The Geeks Club. It runs on API, Web.

GatewayAPI plans and pricing

All plans

RCS Basic €0.04 once Per RCS message, per operator in the selected country. Price shown for HI3G · Pricing varies by operator and country gatewayapi.com · 9 Oct 2026

Pay-as-you-go SMS Not published Pay only for SMS traffic sent; country-specific rates apply. No monthly subscription by default · Some countries require a short code · High-volume discounts by quote gatewayapi.com · 9 Oct 2026

Compared on transactional SMS software

Free plan: No
Two-way SMS: Yes
Inbound webhooks: Yes
MMS support: Yes
Short code support: Yes
SDK languages: Node.js

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The record

Product: GatewayAPI provides a messaging platform for SMS, RCS, and email, with APIs for sending messages globally.
Messaging features: Its SMS services include virtual numbers, shortcodes, keywords, number lookup, and two-way messaging.
RCS: RCS Business Messaging supports interactive branded messages with rich media.
Transactional use: GatewayAPI describes transactional messaging for automated alerts, one-time passwords, and order updates.
Free account: Creating and maintaining a GatewayAPI account does not cost anything, while SMS traffic is billed separately.
Integrations: Listed integrations include WordPress, Zapier, Make, Shopify, WooCommerce, Salesforce, Slack, and Zendesk.
Developer access: The documentation recommends its Message API for new customers sending SMS and RCS messages to phone numbers.
SMPP access: A direct SMPP connection for high-volume SMS is available to selected customers.
Security audits: GatewayAPI says it receives annual ISAE 3000 and ISAE 3402 auditor statements concerning GDPR compliance.
EU data residency: Its EU setup keeps data storage with a cloud provider operating physically in the EU and owned by an EU company, with connections handled through EU telecommunications companies and A2P providers by default.
Confidential messaging: The Secret feature excludes message content, sender, and recipient from the traffic log and system storage.
Account controls: Security add-ons include country and rate limits, IP whitelisting, and URL whitelisting.
Support: GatewayAPI says its average support response time is under 20 seconds during working hours and that support has no minimum spending requirement.
Company: GatewayAPI is owned and operated by ONLINECITY.IO, which the company says has operated since 1999.

Where it ranks on The Geeks Club

Best Transactional SMS Software in 2026#76 of 77

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Sources

gatewayapi.com· checked 9 Oct 2026
gatewayapi.com/pricing/· checked 9 Oct 2026
gatewayapi.com/integrations/· checked 9 Oct 2026
gatewayapi.com/docs/· checked 9 Oct 2026
gatewayapi.com/security-and-compliance/· checked 9 Oct 2026
gatewayapi.com/the-team/· checked 9 Oct 2026