One API Call to Message on WhatsApp
The WhatsApp Business Platform requires Meta business verification, pre-approved message templates, and complex webhook handling. RelayAPI handles OAuth, rate limits, media hosting, and API changes.
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const response = await fetch('https://api.relayapi.dev/v1/posts', {
method: 'POST',
headers: {
'Authorization': 'Bearer rlay_live_xxxxxxxxxx',
'Content-Type': 'application/json',
},
body: JSON.stringify({
content: 'Check out our latest update!',
platforms: ['whatsapp'],
media: ['https://cdn.example.com/image.jpg'],
}),
});WhatsApp Business Platform API
- Meta Business verification and WhatsApp Business API access approval can take days to weeks
- All outbound messages outside 24-hour windows must use pre-approved message templates reviewed by Meta
- Webhook setup requires HTTPS endpoints, signature verification, and handling multiple event types
- Phone number registration, quality rating, and messaging limits are tightly coupled and hard to manage
- Media uploads require hosting files on public URLs or uploading to the WhatsApp media endpoint with resumable uploads
RelayAPI
- RelayAPI streamlines the business verification and API access process with guided setup and status tracking
- Manage and submit message templates through RelayAPI with status tracking and automatic formatting
- We handle webhook infrastructure, signature verification, and event routing -- you get clean callbacks
- Built-in phone number management with quality monitoring and automatic messaging limit optimization
- Upload media directly to RelayAPI -- we handle format conversion, hosting, and WhatsApp media endpoint integration
WhatsApp Business Account Required
Publishing via the WhatsApp Business Platform API requires a verified Meta Business account and an approved WhatsApp Business phone number. Personal WhatsApp accounts cannot be used.
Supported Content Types
How It Works
Connect Your Account
Authorize your WhatsApp account via OAuth in 30 seconds
Build Your Integration
Use the REST API or our SDKs to publish content
RelayAPI Handles the Rest
We manage publishing, rate limits, and delivery notifications
Ship Faster
Send WhatsApp messages with a single API call. No webhook infrastructure, no template XML, no media hosting. Connect your Business account and start messaging.
Official API, Zero Hassle
RelayAPI uses the official WhatsApp Business Platform API. Messages are delivered natively with read receipts and delivery status, while we handle verification and compliance.
Template Management Made Simple
Create, submit, and track message template approvals through RelayAPI. We handle template formatting, variable substitution, and locale management across your campaigns.
Frequently Asked Questions
Start Building with WhatsApp
Join developers who chose RelayAPI over building with WhatsApp Business Platform API directly.
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