SendAPI Introduction

SendAPI is a unified developer platform for sending WhatsApp messages, transactional SMS, OTP codes, and transactional emails through a single, elegant REST API.

Instead of juggling multiple vendors, webhooks, and billing accounts, SendAPI provides a single interface to reach your users globally across their preferred channels.

Core Services

1. WhatsApp Business API

We are an official Meta Business Solution Provider. With SendAPI, you can spin up a WhatsApp Session in seconds, send template messages, and build interactive conversational bots using our Webhooks. Learn about the WhatsApp API →

2. SMS & OTP Verification

Send critical alerts and two-factor authentication (2FA) codes globally. Our Smart Routing engine ensures the highest delivery rates by seamlessly failing over between tier-1 telecom carriers. Learn about the SMS API →

3. Transactional Email

Deliver password resets, receipts, and notifications instantly. We provide dedicated IP pools, customizable HTML templates, and full open/click tracking. Learn about the Email API →

Developer Experience First

SendAPI was built by developers, for developers. We prioritize:

• Idempotency: Safely retry requests without accidentally double-charging customers.
• Type-Safe SDKs: Official libraries for Node.js, Python, and PHP.
• Global Webhooks: Real-time delivery receipts and inbound message events.

Next Steps

Get started by obtaining an API key and sending your first message in under 5 minutes.

Ready to build?

Head to the Quick Start Guide to send your first message.