// WhatsApp Business API

Reach your customers on WhatsApp

Send notifications, alerts and one-to-one conversations through the official WhatsApp Business Platform — with approved templates, two-way messaging, media and interactive buttons, fully integrated with your SMSID account.

Get started View WhatsApp API docs

Template messages

Initiate conversations with pre-approved, branded templates supporting variables, media headers and buttons.

Two-way chat

Receive customer replies and handle them within the 24-hour customer-care window.

Rich media

Send images, documents, video, location, contacts and interactive list or reply buttons.

One API, one balance

Use the same SMSID API key and prepaid balance you already use for SMS and OTP.

Delivery insights

Track sent, delivered, read and failed statuses through real-time callbacks.

Official & compliant

How it works

We provision your WhatsApp Business Account (WABA) and verified business number with our delivery partner.
Your message templates are registered and approved by Meta.
You send via the SMSID API using your existing API key — text or template.
Replies and delivery reports flow back to your account in real time.

Simple to send

A template message is one API call:

curl -X POST https://smsid.co.uk/api/v1/whatsapp/send \
  -H "X-Api-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"type":"template","to":"+447700900123","template":"welcome","language":"en","params":["Ahmed"]}'

WhatsApp Business onboarding requires a verified business profile and a dedicated business phone number. Our team handles the setup with the provider. Contact us to get started.