WhatsApp API
Send Text Message
Send a plain WhatsApp text message to any mobile number via the ChatSyncs API — request parameters, GET and POST examples, and the success/error response shapes. Use when a developer asks how to send a WhatsApp message from their own server/code, or why their send request returned a subscriber-limit error.
POST
Send Text Message
Sends a WhatsApp text message to any mobile number from one of your connected WhatsApp
numbers.
This sends a session message — only deliverable if the recipient messaged your business
within the last 24 hours (a customer-initiated conversation). To message someone outside that
window, use an approved Template Message instead — see
Why Templates Exist.
Body
application/x-www-form-urlencoded
Your ChatSyncs API key (not a WhatsApp/Meta access token). Where to find it.
Example:
"API-KEY"
The WhatsApp account's phone number ID. Where to find it.
Example:
"PHONE-NUMBER-ID"
The subscriber's phone number, with country code, digits only.
Example:
"PHONE-NUMBER"
The text content to send. On a GET request, this must be URL-encoded.
Example:
"TEXT-MESSAGE"
Previous
Send Template MessageSend an approved WhatsApp message template to a phone number via the ChatSyncs API — generated end-to-end from the API Developer Console, no hand-written fields. Use when a developer asks how to message someone outside the 24-hour window, or how to send a specific template programmatically.
Next
Send Text Message

