Sending WhatsApp messages

In order to send a WhatsApp message, you must have an active WhatsApp channel and perform a HTTP request to the following endpoint with a valid access key

Send a message

Send a message to a channel

post

/workspaces/{workspaceId}/channels/{channelId}/messages

Authorizations

useraccessKey

Path parameters

workspaceIdstring · uuidrequired

The ID of the workspace

channelIdstring · uuidrequired

The ID for a channel

Body

senderobject

receiverobjectrequired

referencestring

A reference to the message. This can be used to identify the message in the channel.

Example: my-own-identifier

templateobject | nullable

metaobject

replyToobject

bodyMessageBody

notificationChannelNotification

capFrequencyboolean

If set to true, the frequency capping settings of the platform will be used to either allow or reject the message to a contact. Can only be set to true if the message is sent to a contact and .meta.extraInformation.useCase is marketing.

enableLinkTrackingboolean

If set to true and message is a test/campaign message, web tracking parameters will be appended to the links in the message.

ignoreQuietHoursboolean

If set to true, quiet hours settings will be ignored and the message will be sent as soon as possible.

ignoreGlobalHoldoutboolean

Do not check if the recipient is part of global holdout. To be used to send transactional messages.

tagsstring · min: 1 · max: 50[]

Tags to associate with the message. Tags are converted to lower case and tags that do not exist are automatically created. You can view your created tags in the UI. You can specify up to 10 tags per message.

shortLinksobject | nullable

SMS link shortening options. When using templates, please refer to the template level shortLinks instead.

scheduledForstring · date-time

Scheduled time to send message at. Must be formated as RFC3339 timestamp. When set, the message status will be scheduled until it's sent. Messages scheduled for a time in the past or within 10 minutes of the request may be sent immediately. Messages scheduled farther than 35 days will be rejected.

validityinteger

Validity determines for how many seconds a message is valid. If none is provided, the channel message type will be used to determine it. A promotional, conversational or transactional channel message is valid for 36 hours (129600 seconds). A message sent from a 2FA channel is valid for 10 minutes (600 seconds).

any of

Responses

application/json

application/json

application/json

application/json

application/json

cURL

JavaScript

Python

HTTP

cURL

curl -L \
  --request POST \
  --url '/workspaces/{workspaceId}/channels/{channelId}/messages' \
  --header 'Authorization: Bearer jwt' \
  --header 'Content-Type: application/json' \
  --data '{"sender":{"connector":{"identifierValue":"[e-mail]","annotations":{}}},"receiver":{"contacts":[{"id":"a1405560-c8d3-4b1a-877d-3f449ad95352","identifierKey":"emailaddress","identifierValue":"[e-mail]","type":"cc","identifiers":[{"identifierKey":"emailaddress","identifierValue":"[e-mail]"}]}]},"reference":"my-own-identifier","template":{"projectId":"a1405560-c8d3-4b1a-877d-3f449ad95352","version":"a1405560-c8d3-4b1a-877d-3f449ad95352","parameters":[{"key":"text","type":"string"}],"shortLinks":{},"variables":{},"attachments":[{"mediaUrl":"https://example.com","filename":"text"}],"utmParameters":[{"key":"text","value":"text"}]},"meta":{"extraInformation":{"ANY_ADDITIONAL_PROPERTY":"anything"},"referral":{"metadata":{}},"order":{"products":[{"price":{}}]},"referredProduct":{},"email":{"headers":{},"from":{}},"pushNotifications":{"gatewayTypeOverride":"apns"},"flow":{},"journey":{},"campaign":{}},"replyTo":{"id":"text","type":"message"},"body":{"type":"text","text":{"text":"text","actions":[{"type":"link","link":{"text":"text"}}],"attachments":[{"mediaUrl":"https://example.com","filename":"text"}],"metadata":{"telegram":{"parseMode":"Markdown"},"headers":{},"whatsapp":{},"line":{"emoji":{"items":[{"index":1,"productId":"text","emojiId":"text"}]}}}}},"notification":{},"tags":[null],"shortLinks":{"domain":"text"}}'

202

400

404

409

422

202

{
  "id": "123e4567-e89b-12d3-a456-426614174000",
  "channelId": "123e4567-e89b-12d3-a456-426614174000",
  "meta": {
    "extraInformation": {
      "ANY_ADDITIONAL_PROPERTY": "anything"
    },
    "referral": {
      "metadata": {}
    },
    "order": {
      "products": [
        {
          "price": {}
        }
      ]
    },
    "referredProduct": {},
    "email": {
      "headers": {},
      "from": {}
    },
    "pushNotifications": {
      "gatewayTypeOverride": "apns"
    },
    "navigatorId": "123e4567-e89b-12d3-a456-426614174000",
    "navigatorMessageId": "123e4567-e89b-12d3-a456-426614174000",
    "flow": {},
    "journey": {},
    "campaign": {}
  },
  "reference": "my-own-identifier",
  "parts": [
    {
      "platformReference": "text"
    }
  ],
  "status": "accepted",
  "reason": "text",
  "direction": "incoming",
  "origin": {
    "type": "text",
    "id": "text"
  },
  "replyTo": {
    "id": "text",
    "order": 1,
    "type": "message"
  },
  "lastStatusAt": "2025-02-21T18:03:44.992Z",
  "createdAt": "2025-02-21T18:03:44.992Z",
  "updatedAt": "2025-02-21T18:03:44.992Z",
  "details": "text",
  "failure": {
    "code": 1,
    "description": "Unsupported media type",
    "source": {
      "code": "text",
      "name": "text"
    }
  },
  "tags": [
    "text"
  ],
  "shortLinks": {
    "domain": "text"
  },
  "scheduledFor": "2025-02-21T18:03:44.992Z",
  "sender": {
    "connector": {
      "id": "123e4567-e89b-12d3-a456-426614174000",
      "identifierValue": "text",
      "annotations": {
        "name": "text"
      },
      "types": [
        "text"
      ]
    }
  },
  "receiver": {
    "connector": {
      "id": "123e4567-e89b-12d3-a456-426614174000",
      "identifierValue": "text",
      "annotations": {
        "name": "text"
      },
      "types": [
        "text"
      ]
    }
  },
  "body": {
    "type": "text",
    "text": {
      "text": "text",
      "actions": [
        {
          "type": "link",
          "link": {
            "text": "text"
          }
        }
      ],
      "attachments": [
        {
          "mediaUrl": "https://example.com",
          "filename": "text"
        }
      ],
      "metadata": {
        "telegram": {
          "parseMode": "Markdown"
        },
        "headers": {},
        "whatsapp": {},
        "line": {
          "emoji": {
            "items": [
              {
                "index": 1,
                "productId": "text",
                "emojiId": "text"
              }
            ]
          }
        }
      }
    }
  }
}

Message was accepted for processing

When sending outbound messages as well as setting the receiver information you must set message body field in all cases except for sending a message template when you must only set the template field

Body

{
 "receiver": {
   "contacts": [
     {
       "identifierKey": "phonenumber",
       "identifierValue": "[phone]"
     }
   ]
 },
 "body": {...}
}

Template

{
 "receiver": {
   "contacts": [
     {
       "identifierKey": "phonenumber",
       "identifierValue": "[phone]"
     }
   ]
 },
 "template": {...}
}

If it has been more than 24 hours since a customer last messaged you, you have to start a conversation by sending a template message first. Non-template messages can only be sent when the customer care window is active. You can check the expiry time for an active customer care window for a contact by making a request as follows:

Get channel details for a contact

Retrieve channel information for a given contact.

get

/workspaces/{workspaceId}/channels/{channelId}/contacts/{contactId}

Authorizations

useraccessKey

Path parameters

workspaceIdstring · uuidrequired

The ID of the workspace

channelIdstring · uuidrequired

The ID for a channel

contactIdstring · uuidrequired

The ID for a contact

Query parameters

contactIdentifierValuestring

The receiver identifier value.

Responses

application/json

application/json

cURL

JavaScript

Python

HTTP

cURL

curl -L \
  --url '/workspaces/{workspaceId}/channels/{channelId}/contacts/{contactId}' \
  --header 'Authorization: Bearer jwt'

200

404

200

{
  "serviceWindowExpireAt": "2025-02-21T18:03:44.992Z",
  "isPermanentSession": true,
  "metadata": {
    "ANY_ADDITIONAL_PROPERTY": "text"
  }
}

OK

The Channels API supports many of the features of WhatsApp, however due to the omni channel nature of the API there may be some differences between the Channels API message and the native WhatsApp API. Here is an overview of the WhatsApp messages types and Channels API message types:

WhatsApp API type	Channels API
text	text
image / sticker	image
audio / document / video	file
location	location
reaction	-
interactive - quick reply button	text + action / image + action
interactive - list	list
interactive - multi product message	-
interactive - product	-
contacts	-
replies	replyTo
template	template

Outbound messages

Except for the template section all examples below must be set in the body field.

{
 "receiver": {
   "contacts": [
     {
       "identifierValue": "[phone]"
     }
   ]
 },
 "body": {...}
}

Text

Text Message

{ "type": "text", "text": { "text": "Single text message" } }

Text message with reply buttons

{ "type": "text", "text": { "text": "Single text message with reply actions", "actions": [ { "type": "reply", "reply": { "text": "Reply action 1" } }, { "type": "reply", "reply": { "text": "Reply action 2" } } ] } }

Text message with postback actions

{ "type": "text", "text": { "text": "Single text message with postback actions", "actions": [ { "type": "postback", "postback": { "text": "Postback action 1", "payload": "postback-payload-1" } }, { "type": "postback", "postback": { "text": "Postback action 2", "payload": "postback-payload-2" } } ] } }

Text message with reply and postback actions

{ "type": "text", "text": { "text": "Single text message with reply and postback actions", "actions": [ { "type": "postback", "postback": { "text": "Postback action 1", "payload": "postback-payload-1" } }, { "type": "reply", "reply": { "text": "Reply action 1" } } ] } }

Text message with location request

{ "text": "Single text message with location request", "actions": [ { "type": "locationRequest" } ] }

Image

Single image message

{ "type": "image", "image": { "images": [ { "altText": "Label of first image", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FRPPgQAGyZE7rvIh3WM2Z%2Fimage2.avif?alt=media" } ] } }

Single image message with text

{ "type": "image", "image": { "images": [ { "altText": "Label of first image", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FRPPgQAGyZE7rvIh3WM2Z%2Fimage2.avif?alt=media" } ], "text": "Single image message" } }

Multiple image message

{ "type": "image", "image": { "images": [ { "altText": "Label of first image", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FrEM9zztd8SEiJS6RQuR3%2Fimage.png?alt=media" }, { "altText": "Label of second image", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FRPPgQAGyZE7rvIh3WM2Z%2Fimage2.avif?alt=media" } ], "text": "Multiple images message" } }

Single image message with postback actions

{"type": "image", "image": { "images": [ { "altText": "Image label", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FrEM9zztd8SEiJS6RQuR3%2Fimage.png?alt=media" } ], "text": "Single image message with postback actions", "actions": [ { "type": "postback", "postback": { "payload": "postback-payload-1", "text": "Postback option 1" } }, { "postback": { "payload": "postback-payload-2", "text": "Postback option 2" }, "type": "postback" } ] } }

Single image message with label and reply actions

{ "type": "image", "image": { "text": "Single image message with reply actions", "images": [ { "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FrEM9zztd8SEiJS6RQuR3%2Fimage.png?alt=media", "altText": "Image label" } ], "actions": [ { "type": "reply", "reply": { "text": "Reply action 1" } }, { "type": "reply", "reply": { "text": "Reply action 2" } } ] } }

Single image message with label, postback and reply actions

{ "type": "image", "image": { "text": "Single image message with postback and reply actions", "images": [ { "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FrEM9zztd8SEiJS6RQuR3%2Fimage.png?alt=media", "altText": "Image label" } ], "actions": [ { "type": "postback", "postback": { "text": "Postback action", "payload": "postback-payload" } }, { "type": "reply", "reply": { "text": "Reply action" } } ] } }

Multiple images message with labels and postback actions

{ "type": "image", "image": { "images": [ { "altText": "First image label", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FrEM9zztd8SEiJS6RQuR3%2Fimage.png?alt=media" }, { "altText": "Second image label", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FRPPgQAGyZE7rvIh3WM2Z%2Fimage2.avif?alt=media" } ], "text": "Multiple images message with postback actions", "actions": [ { "type": "postback", "postback": { "payload": "postback-payload-1", "text": "Postback action 1" } }, { "postback": { "payload": "postback-payload-2", "text": "Postback action 2" }, "type": "postback" } ] } }

Multiple images message with reply actions

{ "type": "image", "image": { "images": [ { "altText": "First image label", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FrEM9zztd8SEiJS6RQuR3%2Fimage.png?alt=media" }, { "altText": "Second image label", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FRPPgQAGyZE7rvIh3WM2Z%2Fimage2.avif?alt=media" } ], "text": "Multiple images message with reply actions", "actions": [ { "type": "reply", "reply": { "text": "Reply action 1" } }, { "reply": { "text": "Reply action 2" }, "type": "reply" } ] } }

Multiple images message with labels, postback and reply actions

{ "type": "image", "image": { "images": [ { "altText": "First image label", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FrEM9zztd8SEiJS6RQuR3%2Fimage.png?alt=media" }, { "altText": "Second image label", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FRPPgQAGyZE7rvIh3WM2Z%2Fimage2.avif?alt=media" } ], "text": "Multiple images message with postback and reply actions", "actions": [ { "type": "postback", "postback": { "payload": "postback-payload", "text": "Postback action" } }, { "reply": { "text": "Reply action" }, "type": "reply" } ] } }

File

Single file message

{ "type": "file", "file": { "text": "Single file message", "files": [ { "contentType": "video/mp4", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FtXMQ4lIinia9ehf4EpC4%2Fvideo.mp4?alt=media" } ] } }

Single file message with postback and reply actions

{ "type": "file", "file": { "text": "Single file message", "files": [ { "contentType": "video/mp4", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FtXMQ4lIinia9ehf4EpC4%2Fvideo.mp4?alt=media" } ], "actions": [ { "type": "postback", "postback": { "text": "Postback action" } }, { "type": "reply", "reply": { "text": "Reply action" } } ] } }

Multiple files message

{ "type": "file", "file": { "text": "Multiple files message", "files": [ { "contentType": "video/mp4", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FtXMQ4lIinia9ehf4EpC4%2Fvideo.mp4?alt=media" }, { "contentType": "application/pdf", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FPnRToYX2feW96HAOrh4x%2Fdocument.pdf?alt=media" } ] } }

Multiple files message with filename

{ "type": "file", "file": { "text": "Multiple files message", "files": [ { "contentType": "video/mp4", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FtXMQ4lIinia9ehf4EpC4%2Fvideo.mp4?alt=media" }, { "contentType": "application/pdf", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FPnRToYX2feW96HAOrh4x%2Fdocument.pdf?alt=media", "filename": "passport.pdf" } ] } }

Multiple files message with two postback actions and a reply action

{ "type": "file", "file": { "text": "Multiple files message", "files": [ { "contentType": "video/mp4", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FtXMQ4lIinia9ehf4EpC4%2Fvideo.mp4?alt=media" }, { "contentType": "application/pdf", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FPnRToYX2feW96HAOrh4x%2Fdocument.pdf?alt=media", "filename": "passport.pdf" } ], "actions": [ { "type": "postback", "postback": { "text": "Postback action 1", "payload": "postback-payload-1" } }, { "type": "postback", "postback": { "text": "Postback action 2", "payload": "postback-payload-2" } }, { "type": "reply", "reply": { "text": "Reply action" } } ] } }

Location

{ "type": "location", "location": { "coordinates": { "latitude": 52.3435942, "longitude": 4.9091077 }, "location": { "address": "Trompenburgstraat 2C, 1079 TX Amsterdam", "label": "MessageBird Amsterdam office" } } }

List

List message without sections

{ "type": "list", "list": { "items": [ { "actions": [ { "type": "postback", "postback": { "payload": "postback-action-payload-1", "text": "Postback action 1" } }, { "type": "postback", "postback": { "payload": "postback-action-payload-2", "text": "Postback action 2" } } ] } ], "title": "List title", "altText": "List alt text", "text": "List text" } }

List message with sections

{ "type": "list", "list": { "items": [ { "title": "Section 1", "actions": [ { "type": "postback", "postback": { "payload": "postback-action-payload-1", "text": "Postback action 1" } }, { "type": "postback", "postback": { "payload": "postback-action-payload-2", "text": "Postback action 2" } } ] }, { "title": "Section 2", "actions": [ { "type": "postback", "postback": { "payload": "postback-action-payload-3", "text": "Postback action 3" } }, { "type": "postback", "postback": { "payload": "postback-action-payload-4", "text": "Postback action 4" } } ] } ], "title": "List title", "altText": "List alt text", "text": "List text" } }

List message with sections and custom button label

{ "type": "list", "list": { "items": [ { "title": "Section 1", "actions": [ { "type": "postback", "postback": { "payload": "postback-action-payload-1", "text": "Postback action 1", "metadata": { "description": { "label": "Postback action description 1" } } } }, { "type": "postback", "postback": { "payload": "postback-action-payload-2", "text": "Postback action 2", "metadata": { "description": { "label": "Postback action description 2" } } } } ] }, { "title": "Section 2", "actions": [ { "type": "postback", "postback": { "payload": "postback-action-payload-3", "text": "Postback action 3", "metadata": { "description": { "label": "Postback action description 3" } } } }, { "type": "postback", "postback": { "payload": "postback-action-payload-4", "text": "Postback action 4", "metadata": { "description": { "label": "Postback action description 4" } } } } ] } ], "title": "List title", "altText": "List alt text", "text": "List text", "metadata": { "button": { "label": "Show options" } } } }

ReplyTo

You can send any outbound message as a reply to a previous message by setting the replyTo object as shown below. The replyTo.id should be set to the id of a received message and the replyTo.type should be set to "message"

{
 "receiver": {
   "contacts": [
     {
       "identifierValue": "[phone]"
     }
   ]
 },
 "body": {...},
 "replyTo": {
   "id": "<recievedmessageid>",
   "type": "message"
 }
}

ReplyTo with a text message

{ "type": "text", "text": { "text": "Single text message" }, "replyTo": { "id": "1e7b70ab-3dcc-48f4-a6f6-63a493f6134c", "type": "message" } }

ReplyTo with an image message

{ "type": "image", "image": { "images": [ { "altText": "Label of first image", "mediaUrl": "https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FRPPgQAGyZE7rvIh3WM2Z%2Fimage2.avif?alt=media" } ] }, "replyTo": { "id": "1e7b70ab-3dcc-48f4-a6f6-63a493f6134c", "type": "message" } }

ReplyTo with text message with postback actions

{ "type": "text", "text": { "text": "Single text message with postback actions", "actions": [ { "type": "postback", "postback": { "text": "Postback action 1", "payload": "postback-payload-1" } }, { "type": "postback", "postback": { "text": "Postback action 2", "payload": "postback-payload-2" } } ] }, "replyTo": { "id": "1e7b70ab-3dcc-48f4-a6f6-63a493f6134c", "type": "message" } }

Template

Template is the only message type that can be sent by a business to a recipient outside the customer service window, however, a prior opt-in is required. Templates must be active in Studio and, therefore, pre-approved by Meta, before they are used. It's also important to note that the code snippets below must be set in the message template field

{
 "receiver": {
   "contacts": [
     {
       "identifierValue": "[phone]"
     }
   ]
 },
 "template": {...}
}

Text template with variable

	{ "projectId":"ce6a2fd6-b2fa-4f5a-a2cd-f3bd15883318", "version":"latest", "locale":"en", "parameters":[ { "type":"string", "key":"name", "value":"Robert" } ] }

Image template with button and variables

	{ "projectId":"7b492653-450b-4e97-b5e4-3827868e7438", "version":"latest", "locale":"en", "parameters":[ { "type":"string", "key":"imageURL", "value":"https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdnJZeZvhOMhDQA8SpjQM%2Fuploads%2FRPPgQAGyZE7rvIh3WM2Z%2Fimage2.avif?alt=media" } ] }

Image with a variable in a button

	{ "projectId":"6449eb42-dffb-41c2-81a1-7fd956d2e7a6", "version":"e0e9190c-c3e7-4026-8fc3-d28a77aa1a52", "locale":"en", "parameters":[ { "type":"string", "key":"name", "value":"Robert" }, { "type":"string", "key":"url", "value":"?campaignid=123456" } ] }