API notifications and OTP

Send essential WhatsApp notifications from your systems

Wasel provides API keys and template-based sending paths for technical teams. The business configures its WhatsApp setup and approved templates, while developers connect the event, recipient, and allowed variables.

API keysApproved templatesOperational notificationsOTP workflows

The Wasel principle

Automate where the rule is clear. Bring in a person where judgment matters.

We review triggers, templates, exceptions, and ownership before a workflow goes live.
01

Connect a real business event

Trigger a message from an order update, appointment event, account action, or other defined system event.

02

Keep templates and variables controlled

Use the approved template category and pass only the variables expected by that template.

03

Handle delivery outcomes

Plan for accepted, delivered, failed, and customer-response events so the calling system knows what happened.

Frequently asked questions

Does Wasel guarantee template approval or delivery?

No. Template approval and message delivery depend on Meta, the business configuration, policy compliance, and the recipient environment.