Top Sites>Rock-Solid and Award-Winning SMS Gateway | GatewayAPI | gatewayapi.com

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Sitemap: https://gatewayapi.com/sitemap_index.xml
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GatewayAPI: llms.txt
GatewayAPI is a global messaging platform (CPaaS) focused on A2P SMS, RCS Business Messaging and email services. This file points to the most relevant resources for understanding the product, integrating the APIs correctly and finding compliance, operational status and support information.
## Quick orientation
- [Homepage](https://gatewayapi.com/) – Overview of products, integrations and access to docs, help center and status
- [SMS APIs overview](https://gatewayapi.com/global-sms-api/) – API options (REST, SMPP, Kannel, Simple) and integration models
- [Pricing](https://gatewayapi.com/pricing/) – SMS pricing for 200+ countries, premium vs standard routes, downloadable price lists
- [EU setup](https://gatewayapi.com/eu-setup/) – Unique EU setup with hosting, routing and ownership entirely within the EU
- [About GatewayAPI](https://gatewayapi.com/the-team/) – GatewayAPI is based in Denmark and is owned and operated by ONLINECITY.IO
- [Compliance](https://gatewayapi.com/security-and-compliance/) – Focus on EU data protection standards and secure messaging
## API documentation
- [Docs: introduction](https://gatewayapi.com/docs/) – Entry point and recommended starting path (REST)
- [Docs: integration guide](https://gatewayapi.com/docs/guide/) – Practical integration flow and best practices
- [Docs: authentication](https://gatewayapi.com/docs/apis/authentication/) – API keys, signatures and authentication mechanisms
- [Mobile Messaging API](https://gatewayapi.com/docs/message/overview/) – Send both SMS and RCS messages through the new Messaging API
### SMS APIs
- [Docs: REST (SMS)](https://gatewayapi.com/docs/apis/rest/) – Primary API (HTTP/JSON) with webhooks, sender classes and callbacks
- [Docs: Simple HTTP](https://gatewayapi.com/docs/apis/simple/) – Lightweight requests where JSON is not required
- [Docs: SMPP](https://gatewayapi.com/docs/apis/smpp/) – Stateful TCP protocol for high-volume traffic
### Email APIs and email ↔ SMS
- [Docs: email REST](https://gatewayapi.com/docs/apis/email/) – REST API for email delivery, SPF/DKIM and callbacks
- [Docs: email to/from SMS](https://gatewayapi.com/docs/apis/email-to-sms/) – Whitelisting, webhooks and bidirectional email ↔ SMS flows
- [Product: email API](https://gatewayapi.com/email-api/) – High-level overview of the email offering
## Industry expertise
- [Marketing & Sales](https://gatewayapi.com/sms-marketing/) – Global scaling for SMS marketing, payments and customer engagement
- [Retail & e-commerce](https://gatewayapi.com/retail-and-ecommerce/) – Retail and e-commerce messaging that generates revenue
- [Healthcare industry](https://gatewayapi.com/healthcare-industry/) – Simple and effective patient communication with SMS
- [Transport industry](https://gatewayapi.com/transport-industry/) – Reliable messaging for transport and delivery
### Additional endpoints
- [Docs: prices & balance](https://gatewayapi.com/docs/apis/prices-balance/) – Account balance and price lists in JSON, CSV and XLSX
- [Docs: label statistics](https://gatewayapi.com/docs/apis/statistics/) – Traffic statistics per label
- [Docs: keywords](https://gatewayapi.com/docs/apis/keywords/) – VAS keyword services (subject to agreement)
## Platforms & technologies
As a top-rated messaging platform, GatewayAPI is compatible with:
- **No-code:** [Zapier](https://gatewayapi.com/integrations/zapier/)
- **No-code:** [Make](https://gatewayapi.com/integrations/make/)
- **CMS:** [WordPress](https://gatewayapi.com/integrations/wordpress-sms-plugin/) plugin and WooCommerce integration
- **Technical:** Full documentation for multiple API types (REST, HTTP, SMPP)
## Delivery and error handling
- [Docs: SMS flow](https://gatewayapi.com/docs/sms-flow/) – End-to-end message flow
- [Docs: delivery states](https://gatewayapi.com/docs/states/) – Meaning of delivery states and interpretation
- [Docs: error codes](https://gatewayapi.com/docs/error-codes/) – Error codes and root causes
## Operations and support
- [Status](https://status.gatewayapi.com/) – Real-time system status, incidents and maintenance
- [Support](https://gatewayapi.com/support/) – Support channels and contact information
- [Help center: introduction](https://gatewayapi.com/help-center/introduction/) – FAQs, quickstarts and troubleshooting
- [Help center: country-specific restrictions](https://gatewayapi.com/help-center/country-specific-restrictions/) – Country-level restrictions
## Security, compliance and legal
- [Security & compliance](https://gatewayapi.com/security-and-compliance/) – GDPR, ISAE 3000/3402 and security controls
## Global presence & reliability
GatewayAPI maintains high-uptime infrastructure and strict compliance:
- **Uptime:** Historical uptime above 99.99% with detailed delivery reporting
- **Compliance:** GDPR-compliant EU data storage and ISAE 3000 and ISAE 3402 certifications
- **Support:** Email, chat, phone and structured help center support
## Notes for LLMs and agents
- Prefer documentation as the primary source of truth: https://gatewayapi.com/docs/
- The EU platform may require a different hostname (gatewayapi.eu); see EU setup
- For questions like “how do I send an SMS”, start with REST docs and authentication
- For pricing-related questions, reference both the pricing page and the prices & balance API