- Home
- Transactional SMS Software
- GatewayAPI
On the recordRead 20 Oct 202652 facts
GatewayAPI
Plans and prices
RCS Basic
€0.04usage-based
Price shown for HI3G operator · premium support available separately
Read 20 Oct 2026 · gatewayapi.com
Pay-as-you-go SMS
Priced on request
Prices vary by country · virtual numbers may add monthly fees
Read 20 Oct 2026 · gatewayapi.com
On the record
- Account controls
- Security add-ons include country and rate limits, IP whitelisting, and URL whitelisting.gatewayapi.com · read 9 Oct 2026
- API endpoint
- Message API calls use messaging.gatewayapi.com or messaging.gatewayapi.eu, protected by automatically renewed certificates.gatewayapi.com · read 20 Oct 2026
- API styles
- Documentation covers a modern Message API, a legacy REST API, SMPP for selected customers and Email APIs.gatewayapi.com · read 20 Oct 2026
- Availability
- GatewayAPI reports historical average uptime above 99.99 percent.gatewayapi.com · read 20 Oct 2026
- Code examples
- Official examples cover C#, cURL, Go, HTTPie, Java, Node.js, PHP, Python and Ruby.gatewayapi.com · read 20 Oct 2026
- Company
- GatewayAPI is owned and operated by ONLINECITY.IO, which the company says has operated since 1999.gatewayapi.com · read 9 Oct 2026
- Company founding
- ONLINECITY.IO began in 1999 as a project founded by Thomas Hofmann and Ulrik Hoffmann.onlinecity.io · read 20 Oct 2026
- Company ownership
- GatewayAPI is owned and operated by Danish company ONLINECITY.IO ApS.onlinecity.io · read 20 Oct 2026
- Confidential messaging
- The Secret feature excludes message content, sender, and recipient from the traffic log and system storage.gatewayapi.com · read 9 Oct 2026
- Dashboard
- The service includes a customer dashboard with traffic logs, delivery tracking and multi-account administration.gatewayapi.com · read 20 Oct 2026
- Data retention
- The EU data-processing agreement says personal information is retained for up to 30 days after SMS shipment or receipt.onlinecity.io · read 20 Oct 2026
- Developer access
- The documentation recommends its Message API for new customers sending SMS and RCS messages to phone numbers.gatewayapi.com · read 9 Oct 2026
- Documentation depth
- The documentation is searchable, example-rich, regularly reviewed and includes an OpenAPI specification for the Message API.gatewayapi.com · read 20 Oct 2026
- Email limitation
- Email messaging currently has no delivery reports, according to the help center.gatewayapi.com · read 20 Oct 2026
- Email services
- GatewayAPI provides REST email sending plus SMS-to-email and email-to-SMS services.gatewayapi.com · read 20 Oct 2026
- Email-to-SMS limitation
- Email-to-SMS is intended for low-volume one-to-one use rather than large bulk campaigns and limits messages to 20 SMS parts.gatewayapi.com · read 20 Oct 2026
- 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.gatewayapi.com · read 9 Oct 2026
- EU hosting
- An EU setup keeps hosting and ownership within the European Union for customers with regional data requirements.gatewayapi.com · read 20 Oct 2026
