Free SMS API - Turn Your Android Phone Into an SMS Gateway
Send SMS programmatically using your own Android phone. No per-message fees, no monthly subscription. Just install the app and start sending via REST API.
Send Your First SMS in 30 Seconds
curl -X POST https://api-2ue64mzmvq-du.a.run.app/api/v1/developer/send \
-H "X-API-Key: gsms_live_your_api_key_here" \
-H "Content-Type: application/json" \
-d '{"recipients":[{"phone":"+821012345678","message":"Hello from Group SMS API!"}]}'Simple REST API. Copy, paste, and start sending SMS programmatically.
Why Choose Group SMS API?
The only truly free SMS API that uses your own Android phone
100% Free
No per-message fees, no monthly subscription. Uses your existing phone plan.
Military-Grade Encryption
All messages encrypted with AES-256-GCM. Even we cannot read your messages.
Self-Hosted Gateway
Use your own Android phone as SMS gateway. Full control over your infrastructure.
Simple REST API
Clean, intuitive REST API. Get started in minutes with examples in Python, Node.js, PHP.
Send Globally
Send SMS to any country your phone plan supports. No restrictions, no extra fees.
RESTful Design
Standard HTTP methods, JSON payloads, proper status codes. Works with any programming language.
Common Use Cases
Two-Factor Authentication
Send verification codes for 2FA. Secure, fast, and reliable.
Marketing Campaigns
Bulk SMS campaigns for promotions, announcements, and newsletters.
System Alerts
Server monitoring, error notifications, and automated alerts.
Workflow Automation
Integrate SMS into your business workflows and automation scripts.
Simple, Transparent Pricing
Forever Free
- ✓ 100 messages/day
- ✓ AES-256-GCM encryption
- ✓ Full REST API access
- ✓ Community support
Need higher limits? Contact us for enterprise solutions.
Ready to Start Sending SMS?
Download the app, generate your API key, and start sending SMS in minutes.