WhatsApp Send


Send a WhatsApp message.

A common use-case is to send a response to a message sent from a user, e.g.:


When an event is received on the in port a WhatsApp message is attempted to be sent.

If the message is successfully sent, an event is routed to the success port. Otherwise, i.e. if an error occurs, an event is routed to the error port.

Input/Output Format


The received event is assumed to be an object with the following properties present:

  • to,
  • text, and
  • preview_url.

The properties are expected to have the following types:

tostringA string containing a WhatsApp ID or phone number.
textstringA string containing the body of the message.
preview_urlboolean | undefinedRender a preview if message contains link.

(Please see this documentation on messages for more information.)


An event routed to success generally conforms to the following format:

  "messaging_product": "whatsapp",
  "contacts": [{
      "input": "PHONE_NUMBER",
      "wa_id": "WHATSAPP_ID",
  "messages": [{
      "id": "wamid.ID",

Please refer to the META documentation for more information.

An event routed to the error port may be of any format. The event does describe the error that occured.


This functions does not listen for, nor emits any events.


Correctly configured META App and META Buisness are required to utilise this functions. We have posted a guide on our blog describing how to configure both the LoLo and META side.

META enforces restrictions on sending messages to prevent spam. Please refer to their documentation for more details.