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Reaction messages webhook reference | Developer Documentation

Reaction messages webhook reference

Updated: Nov 14, 2025
This reference describes trigger events and payload contents for the WhatsApp Business Account messages webhook for messages containing a reaction to a previous message sent by a business.
Note: when an end user removes a reaction emoji, a webhook without the “emoji” field will be sent as shown in the sample webhooks below

Triggers

    A WhatsApp user reacts to a previous message sent by a business within the last 30 days.A WhatsApp user removes a previously sent reaction to a previous message sent by a business within the last 30 days

    Syntax

    {
  "object": "whatsapp_business_account",
  "entry": [
    {
      "id": "<WHATSAPP_BUSINESS_ACCOUNT_ID>",
      "changes": [
        {
          "value": {
            "messaging_product": "whatsapp",
            "metadata": {
              "display_phone_number": "<BUSINESS_DISPLAY_PHONE_NUMBER>",
              "phone_number_id": "<BUSINESS_PHONE_NUMBER_ID>"
            },
            "contacts": [
              {
                "profile": {
                  "name": "<WHATSAPP_USER_PROFILE_NAME>"
                },
                "wa_id": "<WHATSAPP_USER_ID>",
                "identity_key_hash": "<IDENTITY_KEY_HASH>" <!-- only included if identity change check enabled -->
              }
            ],
            "messages": [
              {
                "from": "<WHATSAPP_USER_PHONE_NUMBER>",
                "id": "<WHATSAPP_MESSAGE_ID>",
                "timestamp": "<REACTION_TIMESTAMP>",
                "type": "reaction",
                "reaction": {
                  "message_id": "<CONTEXTUAL_WHATSAPP_MESSAGE_ID>",
                  "emoji": "<EMOJI_UNICODE>" <!-- omitted if user removes reaction -->
                }
              }
            ]
          },
          "field": "messages"
        }
      ]
    }
  ]
}
    Parameters
    
Placeholder

Description

Example value

    <BUSINESS_DISPLAY_PHONE_NUMBER>
    String
    Business display phone number.
    15550783881
    <BUSINESS_PHONE_NUMBER_ID>
    String
    Business phone number ID.
    106540352242922
    <CONTEXTUAL_WHATSAPP_MESSAGE_ID>
    String
    WhatsApp message ID of the message the WhatsApp user reacted to.
    wamid.HBgLMTQxMjU1NTA4MjkVAgASGBQzQUNCNjk5RDUwNUZGMUZEM0VBRAA=
    <EMOJI_UNICODE>
    String
    Unicode of emoji sent by the WhatsApp user as a reaction.
    If the user removes their initial reaction, another webhook is triggered, but the emoji property will be omitted from the payload.
    U+1F44D
    <IDENTITY_KEY_HASH>
    String
    Identity key hash. Only included if you have enabled the identity change check feature.
    DF2lS5v2W6x=
    <REACTION_TIMESTAMP>
    String
    Unix timestamp indicating when the customer sent the reaction.
    1739321024
    <WHATSAPP_BUSINESS_ACCOUNT_ID>
    String
    WhatsApp Business Account ID.
    102290129340398
    <WHATSAPP_MESSAGE_ID>
    String
    WhatsApp message ID.
    wamid.HBgLMTY1MDM4Nzk0MzkVAgASGBQzQUFERjg0NDEzNDdFODU3MUMxMAA=
    <WHATSAPP_USER_ID>
    String
    WhatsApp user ID. Note that a WhatsApp user’s ID and phone number may not always match.
    16505551234
    <WHATSAPP_USER_PHONE_NUMBER>
    String
    WhatsApp user phone number. This is the same value returned by the API as the input value when sending a message to a WhatsApp user. Note that a WhatsApp user’s phone number and ID may not always match.
    +16505551234
    <WHATSAPP_USER_PROFILE_NAME>
    String
    WhatsApp user’s name as it appears in their profile in the WhatsApp client.
    Sheena Nelson
    Sample Webhooks
    Receiving a reaction
    {
  "object": "whatsapp_business_account",
  "entry": [
    {
      "id": "102290129340398",
      "changes": [
        {
          "value": {
            "messaging_product": "whatsapp",
            "metadata": {
              "display_phone_number": "15550783881",
              "phone_number_id": "106540352242922"
            },
            "contacts": [
              {
                "profile": {
                  "name": "Sheena Nelson"
                },
                "wa_id": "16505551234"
              }
            ],
            "messages": [
              {
                "from": "16505551234",
                "id": "wamid.HBgLMTY1MDM4Nzk0MzkVAgASGBQzQUFERjg0NDEzNDdFODU3MUMxMAA=",
                "timestamp": "1749419544",
                "type": "reaction",
                "reaction": {
                  "message_id": "wamid.HBgLMTQxMjU1NTA4MjkVAgASGBQzQUNCNjk5RDUwNUZGMUZEM0VBRAA=",
                  "emoji": "👍"
                }
              }
            ]
          },
          "field": "messages"
        }
      ]
    }
  ]
}
    Reaction Removed by end user
    {
  "object": "whatsapp_business_account",
  "entry": [
    {
      "id": "102290129340398",
      "changes": [
        {
          "value": {
            "messaging_product": "whatsapp",
            "metadata": {
              "display_phone_number": "15550783881",
              "phone_number_id": "106540352242922"
            },
            "contacts": [
              {
                "profile": {
                  "name": "Sheena Nelson"
                },
                "wa_id": "16505551234"
              }
            ],
            "messages": [
              {
                "from": "16505551234",
                "id": "wamid.HBgLMTY1MDM4Nzk0MzkVAgASGBQzQUFERjg0NDEzNDdFODU3MUMxMAA=",
                "timestamp": "1749419544",
                "type": "reaction",
                "reaction": {
                  "message_id": "wamid.HBgLMTQxMjU1NTA4MjkVAgASGBQzQUNCNjk5RDUwNUZGMUZEM0VBRAA="
                }
              }
            ]
          },
          "field": "messages"
        }
      ]
    }
  ]
}
    
    
            
    
        
    
    
    
        
    
            
    
                
                
    
                    
                    
                
    
            
    
            
            
    
                                            
    
        
    
    
    

    

    
    
    

    
            
    
            
    

    
    
        
    
            
            
        
    
            
    

    
    
        
    
                    
    

        
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