> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mapp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Update a draft message

> Updates a message draft.<br>Request body example:<br><br><pre>{<br>    "id": 18060600,<br>    "name": "Test Draft Message",<br>    "externalId": null,<br>    "messageCategoryId": null,<br>    "message":<br>    {<br>        "subject": "This is draft test",<br>        "emailBodyText": null,<br>        "emailBodyHtml": "Test",<br>        "smsText": null,<br>        "faxText": null,<br>        "emailHeaders":<br>        [<br>        ],<br>        "attachments":<br>        [<br>        ],<br>        "attachmentReferences": null,<br>        "encoding": "ISO-8859-1",<br>        "encodingSMS": "ISO-8859-1",<br>        "imageHandlingMode": "none"<br>    }<br>}</pre>

## OpenAPI

````json POST /draftmessage/update
{
  "openapi": "3.0.4",
  "info": {
    "title": "Engage public API",
    "version": "1"
  },
  "servers": [
    {
      "url": "https://your-engage-domain.com/api/rest"
    }
  ],
  "tags": [
    {
      "name": "Address Attributes"
    },
    {
      "name": "Async"
    },
    {
      "name": "Audit Log"
    },
    {
      "name": "Automation"
    },
    {
      "name": "Blacklist"
    },
    {
      "name": "CMS"
    },
    {
      "name": "Contact"
    },
    {
      "name": "Content"
    },
    {
      "name": "Coupon"
    },
    {
      "name": "Draft Message"
    },
    {
      "name": "Ecommerce"
    },
    {
      "name": "Group"
    },
    {
      "name": "Group Attributes"
    },
    {
      "name": "Landing Page"
    },
    {
      "name": "Member Attributes"
    },
    {
      "name": "Membership"
    },
    {
      "name": "Message"
    },
    {
      "name": "Meta"
    },
    {
      "name": "Mobile Push"
    },
    {
      "name": "Prepared Message"
    },
    {
      "name": "Process"
    },
    {
      "name": "Profile Attributes"
    },
    {
      "name": "Related Data"
    },
    {
      "name": "Segmentation"
    },
    {
      "name": "System"
    },
    {
      "name": "System User"
    },
    {
      "name": "Usage Statistics"
    },
    {
      "name": "User"
    },
    {
      "name": "Whiteboard"
    }
  ],
  "paths": {
    "/draftmessage/update": {
      "post": {
        "tags": [
          "Draft Message"
        ],
        "summary": "Update a draft message",
        "description": "Updates a message draft.<br>Request body example:<br><br><pre>{<br>    \"id\": 18060600,<br>    \"name\": \"Test Draft Message\",<br>    \"externalId\": null,<br>    \"messageCategoryId\": null,<br>    \"message\":<br>    {<br>        \"subject\": \"This is draft test\",<br>        \"emailBodyText\": null,<br>        \"emailBodyHtml\": \"Test\",<br>        \"smsText\": null,<br>        \"faxText\": null,<br>        \"emailHeaders\":<br>        [<br>        ],<br>        \"attachments\":<br>        [<br>        ],<br>        \"attachmentReferences\": null,<br>        \"encoding\": \"ISO-8859-1\",<br>        \"encodingSMS\": \"ISO-8859-1\",<br>        \"imageHandlingMode\": \"none\"<br>    }<br>}</pre>",
        "operationId": "UpdateDraftMessage",
        "requestBody": {
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/DraftMessage"
              }
            }
          },
          "x-bodyName": "body"
        },
        "responses": {
          "200": {
            "description": "",
            "content": {
              "application/octet-stream": {}
            }
          },
          "400": {
            "description": "",
            "content": {
              "application/octet-stream": {}
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "DraftMessage": {
        "type": "object",
        "properties": {
          "id": {
            "type": "integer",
            "format": "int64"
          },
          "name": {
            "type": "string"
          },
          "externalId": {
            "type": "string"
          },
          "messageCategoryId": {
            "type": "integer",
            "format": "int64"
          },
          "message": {
            "$ref": "#/components/schemas/MessageBase"
          }
        }
      },
      "MessageBase": {
        "type": "object",
        "properties": {
          "subject": {
            "type": "string"
          },
          "emailBodyText": {
            "type": "string"
          },
          "emailBodyHtml": {
            "type": "string"
          },
          "smsText": {
            "type": "string"
          },
          "faxText": {
            "type": "string"
          },
          "emailHeaders": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/Attribute"
            }
          },
          "attachments": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/Attachment"
            }
          },
          "attachmentReferences": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/AttachmentReference"
            }
          },
          "encoding": {
            "type": "string"
          },
          "encodingSMS": {
            "type": "string"
          },
          "imageHandlingMode": {
            "type": "string"
          }
        }
      },
      "Attribute": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          },
          "value": {
            "type": "string"
          }
        }
      },
      "Attachment": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          },
          "contentType": {
            "type": "string"
          },
          "content": {
            "type": "string"
          }
        }
      },
      "AttachmentReference": {
        "type": "object",
        "properties": {
          "contentId": {
            "type": "string"
          },
          "reference": {
            "type": "string"
          }
        }
      }
    }
  }
}
````