WasenderAPI

API Documentation

WasenderApi WhatsApp API

Send Channel Message

Channels (Communities)

POST/api/send-message

Sends a message to a specific WhatsApp channel using its Channel ID.

Send Message to a WhatsApp Channel

To send a message to a WhatsApp Channel, follow these steps:

First, listen for the message.upsert event. This event will include the channel's unique ID (e.g., 123456789@newsletter) in the jid field.
Once you have the channel ID, use it in the to field when sending a message through your usual send endpoint.
The message parameters are the same as those for regular messages. Just ensure the to field is set to the channel's ID.

Parameters

Name	Type	Required	Description
to	string	Yes	Channel ID (e.g., '123456789@newsletter') .
text	string	Yes	The text content of the message. Required if no media/contact/location is sent.
imageUrl	string	No	URL of the image to send.
videoUrl	string	No	URL of the video to send.
documentUrl	string	No	URL of the document to send.
audioUrl	string	No	URL of the audio file to send (sent as voice note).
stickerUrl	string	No	URL of the sticker (.webp) to send.
contact	object	No	Contact card object.
location	object	No	Location object.

Code Examples

curl -X POST "https://www.wasenderapi.com/api/send-message"
  -H "Authorization: Bearer YOUR_API_KEY"
  -H "Content-Type: application/json"
  -d '{
      "to": "123456789@newsletter",
      "text": "Hello everyone in the channel!"
  }'

Response Examples

{
  "success": true,
  "data": {
    "msgId": 100000,
    "jid": "+123456789",
    "status": "in_progress"
  }
}