Multichannel Messaging API — WhatsApp, SMS & Email
SendAPI is a unified messaging API for developers. Send WhatsApp messages, SMS, OTP
verification codes, and transactional email from a single REST API endpoint using one API key.
SendAPI is an official Meta Business Solution Provider with delivery to 190+ countries.
Channels
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WhatsApp Business API — Official Meta Business Solution Provider.
Send template messages, notifications, rich media (images, PDFs, video), and interactive
buttons. Handle two-way conversations at scale.
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SMS & OTP API — Global carrier reach in 190+ countries.
Built-in OTP verification flows with multi-channel failover (SMS → WhatsApp → Email).
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Transactional Email API — Dedicated IP pools, DKIM/SPF/DMARC,
and real-time delivery webhooks for password resets, receipts, and notifications.
Why Developers Choose SendAPI
- One unified API key for all channels — no per-product accounts
- Self-serve signup — live in minutes, no sales call required
- Transparent flat pricing — from $9/month, no per-message surprises
- Type-safe SDKs for TypeScript, Python, and Go
- Idempotency keys for safe retries
- 7-day free trial, no credit card required
Pricing Plans
| Plan |
Monthly |
Emails / mo |
WhatsApp Sessions |
API Keys |
| Starter | $9.99 | 5,000 | 1 | 1 |
| Growth | $29.99 | 25,000 | 3 | 3 |
| Business | $79.99 | 100,000 | 10 | 10 |
| Enterprise | Custom | Unlimited | Unlimited | Unlimited |
SMS usage billed via top-up credits. 7-day free trial on all plans.