Receive messages

When someone replies to a WhatsApp message you sent, Retransmit stores the reply and delivers it to your webhook endpoints as a whatsapp.received event. There is nothing to configure on the WhatsApp side: create an endpoint in the dashboard and subscribe it to whatsapp.received.

Every message sent to one of your connected numbers is yours, whether or not you messaged the sender first. When the sender quoted one of your messages, data.replyToMessageId carries that message’s id.

Payload


{
  "id": "whd_xxxxxxxxxxxx",
  "type": "whatsapp.received",
  "created_at": "2026-09-01T12:05:00.000Z",
  "data": {
    "inboundId": "wai_xxxxxxxxxxxx",
    "accountId": "wab_xxxxxxxxxxxx",
    "from": "+237670000000",
    "to": "+237650000000",
    "profileName": "Amina",
    "type": "text",
    "text": "Thanks, on my way",
    "replyToMessageId": "wa_xxxxxxxxxxxx",
    "providerMessageId": "wamid.HBgMMjM3Njc...",
    "receivedAt": "2026-09-01T12:04:58.000Z",
    "data": {
      "from": "237670000000",
      "id": "wamid.HBgMMjM3Njc...",
      "timestamp": "1788350698",
      "type": "text",
      "text": { "body": "Thanks, on my way" }
    }
  }
}

Field	Description
`accountId`	The connected number’s id, as shown in the dashboard.
`from`	The sender, in E.164 format.
`to`	Your connected number that received the message.
`type`	WhatsApp message type: `text`, `image`, `document`, `audio`, `video`, `sticker`, `location`, `button`, `interactive`, or `reaction`.
`text`	Best-effort text: the body for `text`, the caption for media, the selected option for `button` and `interactive`, the emoji for `reaction`, and `lat,lng` for `location`. `null` when there is none.
`replyToMessageId`	Your message’s `id` when the sender quoted it, else `null`.
`data`	The raw WhatsApp message object, for anything the fields above do not cover.

Replying

A reply from the customer opens a 24-hour customer service window. Inside it you can answer with free-form text or media through Send WhatsApp without a template.