Send Document Message

POST

/v1/messages

Media Message Types and Specifications

This guide outlines the supported media types and their respective size limitations for messages sent via the SendZen API. Adhering to these specifications will ensure successful delivery of your media content.

Document Messages

Transmit important files and documents securely.

Supported Formats: .txt, .xls, .xlsx, .doc, .docx, .ppt, .pptx, .pdf

Maximum File Size: 100 MB

Important Considerations

File Renaming: Ensure that the file extension accurately reflects the actual content type.

URL Accessibility: If providing a URL for media, ensure it is publicly accessible and directly downloadable.

Request

Authorization

Provide your bearer token in the

Authorization

header when making requests to protected resources.

Example:

Authorization: Bearer ********************

Body Params application/json

Examples

Responses

🟢202Accepted

application/json

Bodyapplication/json

🟠400Bad Request

🟠401Unauthorized

🟠403Forbidden

🔴500Internal Server Error

Request Example

Shell

JavaScript

Java

Swift

cURL

Example for Document Message using URLExample for Document using ID

curl --location 'https://api.sendzen.io/v1/messages' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
    "from": "string",
    "to": "string",
    "type": "document",
    "document": {
        "link": "string",
        "caption": "string",
        "filename": "string"
    }
}'

Response Example

202 - Example 1

{
    "message_id": "string",
    "status": "string",
    "to": "string",
    "timestamp": "string"
}

Modified at 2026-07-22 12:47:16

Send Audio Message

Send Interactive Reply Message

Send Document Message

Media Message Types and Specifications#

Document Messages#

Important Considerations#

Request

Responses

Media Message Types and Specifications

Document Messages

Important Considerations