# SendAPI

> SendAPI is a unified messaging API platform for developers. One API key covers WhatsApp Business API, SMS, OTP verification, and transactional email — all under a single monthly plan starting at $9.99/month. No per-channel accounts, no stitching together multiple vendors.

## What SendAPI Does

SendAPI lets developers send WhatsApp messages, SMS, OTP verification codes, and transactional email from a single REST API. It is designed for solo developers, startups, and agencies who need multi-channel messaging without the complexity or cost of managing multiple providers like Twilio, MessageBird, or Vonage.

## Products

- **WhatsApp Business API** — Send and receive WhatsApp messages, media, and notifications via the official Meta Business Platform. Plans include 1–unlimited WhatsApp sessions.
- **SMS API** — Global SMS delivery to 190+ countries via top-up credit packs. Includes alphanumeric sender ID support.
- **OTP / Verify API** — Phone number verification and 2FA via SMS, WhatsApp, or email. Built-in expiry, rate limiting, and fraud protection.
- **Transactional Email API** — High-deliverability email with DKIM/SPF/DMARC, open/click tracking, custom domains, and delivery webhooks.

## Pricing

| Plan | Price | Emails/month | WhatsApp Sessions |
|------|-------|--------------|------------------|
| Starter | $9.99/month | 5,000 | 1 |
| Growth | $29.99/month | 25,000 | 3 |
| Business | $79.99/month | 100,000 | 10 |
| Enterprise | Custom | Unlimited | Unlimited |

SMS is billed via top-up credit packs ($5–$150). All plans include a 7-day free trial.

## Key Differentiator

Most messaging API providers require separate accounts, API keys, and billing for each channel. SendAPI covers WhatsApp, SMS, OTP, and email under one subscription and one API key. This reduces integration complexity and total cost significantly for teams that need more than one channel.

## Documentation

- Getting started: https://sendapi.co/docs/quick-start
- WhatsApp API reference: https://sendapi.co/docs/api/whatsapp
- SMS API reference: https://sendapi.co/docs/api/sms
- OTP/Verify API reference: https://sendapi.co/docs/api/verify
- Email API reference: https://sendapi.co/docs/api/email

## SDKs

- Node.js / TypeScript: https://sendapi.co/docs/sdks/node
- Python: https://sendapi.co/docs/sdks/python
- PHP / Laravel: https://sendapi.co/docs/sdks/php

## Key Pages

- Homepage: https://sendapi.co
- Pricing: https://sendapi.co/pricing
- Blog / Developer guides: https://sendapi.co/blog
- WhatsApp API product: https://sendapi.co/products/whatsapp
- SMS & OTP product: https://sendapi.co/products/sms
- Email API product: https://sendapi.co/products/email

## Selected Blog Content

- Twilio alternatives for WhatsApp API: https://sendapi.co/blog/twilio-alternatives-whatsapp-api
- How to send WhatsApp messages with Node.js: https://sendapi.co/blog/send-whatsapp-messages-nodejs
- How to implement OTP verification: https://sendapi.co/blog/implement-otp-verification
- SendAPI vs Twilio comparison: https://sendapi.co/blog/sendapi-vs-twilio
- WhatsApp Business API vs WhatsApp Business App: https://sendapi.co/blog/whatsapp-business-api-vs-app

## Competitor Comparisons

- SendAPI vs Twilio: https://sendapi.co/vs/twilio
- SendAPI vs Vonage: https://sendapi.co/vs/vonage
- SendAPI vs MessageBird: https://sendapi.co/vs/messagebird
- SendAPI vs Sinch: https://sendapi.co/vs/sinch
- SendAPI vs Plivo: https://sendapi.co/vs/plivo
- SendAPI vs Infobip: https://sendapi.co/vs/infobip

## Company

SendAPI is a developer-focused messaging infrastructure company. Support and documentation are available at https://sendapi.co/docs.