K katembe
Contact sales

Stripe for communications

Communications infrastructure for modern applications

Build messaging, verification, voice, email, and webhook workflows on a single API surface.

Start building API reference
  • 0countries reached
  • 0delivery reliability
  • 0channels, one API

Connected across leading networks

SafaricomMTNVodacomFlutterwaveJumoAirtelOrangeMovitel

Platform capabilities

Operational surfaces that stay in sync

One API for delivery channels

Route transactional and lifecycle traffic through messaging, voice, email, and webhooks.

Verification primitives

Use OTP and phone intelligence to reduce fraud during onboarding and login.

Operational visibility

Track releases, service health, and integration patterns from a single surface.

Products

Delivery, trust, and orchestration primitives

Messaging

Programmable SMS and WhatsApp delivery with retries, templates, and event tracking.

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Voice

Fallback voice delivery for high-importance alerts and spoken OTP flows.

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Email

Send transactional email alongside messaging and verification journeys.

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Webhooks

Event delivery for message status, verification outcomes, and operational automation.

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0countries reached
0delivery reliability
0channels, one API
0median API latency

Solutions preview

Patterns for real operating teams

  • Authentication journeys with OTP and phone checks
  • Transactional messaging with observable delivery state
  • Agentic commerce flows with approval and retry guardrails
Explore solutions

Developer quickstart

Ship the first request fast

Create an account, generate a test key, send your first message, then add a webhook endpoint for status updates.

Open quickstart 
curl -X POST https://api.katembe.io/v1/messages \
  -H "Authorization: Bearer <api_key>" \
  -d '{ "to": "+258840000000", "channel": "sms", "message": "Olá" }'
import { Katembe } from "katembe";
const kb = new Katembe(process.env.KATEMBE_API_KEY);

await kb.messages.send({
  to: "+258840000000",
  channel: "sms",
  message: "Olá",
});
from katembe import Katembe
kb = Katembe(api_key=os.environ["KATEMBE_API_KEY"])

kb.messages.send(
    to="+258840000000",
    channel="sms",
    message="Olá",
)

Integrations

Plugs into the tools your team already uses

T

Twilio migration

Map existing messaging traffic into katembe with compatible webhook events.

S

Shopify

Trigger order notifications, delivery alerts, and return updates.

S

Salesforce

Send account verification and renewal reminders from CRM workflows.

S

Segment

Forward lifecycle events into messaging and verification journeys.

Katembe Voice cut our OTP drop-off rate by 18% in rural markets where SMS coverage is unreliable. It just works.
Amara Diallo, Head of Engineering — Jumo
We migrated 2M monthly OTPs to katembe in a week — delivery rates jumped and support tickets dropped.
Lília Mondlane, CTO — AeroMoz
O alcance por USSD nas zonas rurais é algo que nenhum outro fornecedor nos deu. O katembe simplesmente tinha.
Tiago Bila, Head of Product — MozShop
One API for SMS, WhatsApp and email cut our integration time from months to days.
Aisha Bello, Engineering Lead — INPS

Start building today

Integrate messaging, verification, and voice workflows in minutes with our developer-first API.

Start building Contact sales