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Sendozi

Send your first message in minutes

Quickstart, API reference, webhooks, sandbox testing and error handling for SMS, Email, Voice and WhatsApp.

Quickstart

  1. 1Get an API key
  2. 2Choose a channel
  3. 3Send a request
  4. 4Receive a webhook
Get API keyAPI reference

Developer proof

POST /v1/messages

curlnodephppython
curl https://api.sendozi.com/v1/messages \
  -H "Authorization: Bearer $SENDOZI_API_KEY" \
  -H "Idempotency-Key: order-1042-alert" \
  -H "Content-Type: application/json" \
  -d '{
    "channel": "sms",
    "to": "+2348012345678",
    "from": "Sendozi",
    "body": "Your order #1042 is out for delivery."
  }'

Webhook event preview

{
  "type": "message.delivered",
  "id": "evt_sample_92f1",
  "message_id": "msg_8F41",
  "status": "delivered",
  "delivered_at": "2026-07-02T12:06:18+01:00"
}

  • Authentication

    API keys, environments and rotating credentials safely.

  • Messages API

    Request shape, response format and delivery states.

  • SMS

    Sender IDs, page counts, DND-aware routing and delivery reports.

  • Email

    Domain authentication, streams, templates and suppression handling.

  • Voice

    Voice OTP fallback, text to speech, retries and call outcomes.

  • WhatsApp

    Template approvals, opt-in records, media and reply webhooks.

  • Webhooks

    Delivery events, signature verification and retry behaviour.

  • Sandbox

    Test all four channels without spending or sending for real.

  • Errors and idempotency

    What each error means and how to retry safely.