<BULK_SMS_API>Reach Millions
Reach Millions
Over One API
Transactional and bulk SMS for startups and platforms. Top up in USD, integrate with signed API keys, and ship in minutes.
POST /api/v1/messages/sms
X-API-Key: xensms_…
→ 200 { "messageId": "…", "status": "PENDING" }Features
Everything you need to send at scale
Fast delivery
Single and bulk SMS with queue-backed sending and real-time status.
Signed API keys
HMAC request signing, nonce replay protection, and per-key rate limits.
Developer-first
REST API, copy-paste agent guide, and clear docs — no Swagger maze.
Built for Kenya
Safaricom-ready sender IDs with enterprise onboarding when you scale.
Testimonials
Teams shipping with XenSMS
“We wired XenSMS into our auth flow in an afternoon. Signed API calls just work.”
“Bulk OTP and alerts without fighting a telco integration. Credits and dashboard are straightforward.”
Ready to send your first SMS?
Create an account, grab an API key, and follow our agent-ready quickstart.