Send SMS messages at scale with our robust API. Built for African organizations with local payment methods and competitive pricing across multiple countries.
curl -X POST https://relsms.relworx.com/api/v1/sms/send_message \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"to": "+256701234567",
"message": "Hello from RelSMS!"
}'Built for developers, trusted by organizations across Africa
Send single or bulk SMS messages with delivery confirmation and detailed analytics. Perfect for notifications, marketing, and alerts.
Manage multiple organizations with separate credits, users, and settings. Perfect for agencies and enterprise deployments.
RESTful API with comprehensive documentation, sandbox testing, and webhook support. Get started in minutes.
Pay with Mobile Money (MTN, Airtel) or international credit cards. Supporting African currencies with transparent pricing.
Test your integration safely without sending real messages or consuming credits. Perfect for development and staging.
Track delivery status, failed messages, and detailed reports. Monitor your messaging performance in real-time.
Pay only for what you use. No monthly fees, no hidden charges. Local currencies supported.
Perfect for Ugandan businesses and organizations
For Kenyan organizations and businesses
For Tanzanian organizations and businesses
Join organizations across Africa using RelSMS for their communication needs.