SMS
Reliable, global SMS for every customer journey
Deliver OTP codes, reminders, and operational alerts with carrier-grade routing across more than 190 countries.
Why Katembe SMS
Built for high-volume operational messaging
Global coverage
Direct carrier connections in 190+ countries with intelligent least-cost routing.
High throughput
Burst-capable infrastructure tuned for OTP and time-sensitive notifications.
Compliant by default
Sender ID management, opt-out handling, and regional regulation support out of the box.
Delivery you can trust
Per-message delivery receipts, retry policies, and automatic fallback channels.
Transactional
OTP and verification at scale
Send one-time passwords with sub-second latency, smart retries, and built-in fraud signals so customers can sign in without friction.
Read the SMS docsOperational
Notify customers when it matters
Reminders, delivery updates, and account alerts with templating, scheduling, and per-region sender management — all from a single API.
Explore messaging docsDeveloper-first
Send your first SMS in minutes
A single REST endpoint covers every channel. Switch from SMS to WhatsApp or USSD by changing one parameter.
curl -X POST https://api.katembe.io/v1/messages \
-H "Authorization: Bearer <api_key>" \
-d "channel=sms" \
-d "to=+258840000000" \
-d "message=Your driver is arriving in 5 minutes."
"We migrated our entire OTP flow to Katembe in two weeks. Delivery rates improved and our auth team stopped getting paged on weekends."
Pricing
Pay only for what you send
Volume-based pricing with no monthly minimums. Discounts kick in automatically as you scale.