Developers

SMS API Documentation

Send SMS from your website, app or internal system. Instant API access is included on every bulk SMS plan.

Illustrative requestJSON

{
  "sender_id": "YOURBRAND",
  "to": ["2547XXXXXXXX"],
  "message": "Your verification code is 482913"
}

Example payload, for illustration only.

What the API does

Send SMS

Send messages to one recipient or many from your own code.

Your Sender ID

Send under your registered business name.

Delivery reports

Check which messages reached their recipients.

Prepaid credit

Messages use SMS credit topped up with M-Pesa.

01
Create your account
Account setup is free on every plan.
02
Get API access
Instant API access is included — no separate application.
03
Send your first SMS
Make a request with the recipient, Sender ID and message.
04
Track delivery
Use delivery reports to confirm messages arrived.

API reference

Request the full API reference from our team and we'll send you everything your developers need to integrate.

Prefer us to build it?

Frostwood's software team can integrate SMS into your website, CRM, ERP, school or SACCO system — including M-Pesa payment flows.

Free account setup and instant API access on every plan. Top up with M-Pesa and start sending.