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

# Send a letter

> Sends a physical letter. The document must be a PDF file. Returns an ID for tracking.



## OpenAPI

````yaml https://app.stainless.com/api/spec/documented/samplehc/openapi.documented.yml post /api/v2/communication/letters
openapi: 3.0.3
info:
  title: Sample Healthcare API
  description: API for Sample Healthcare
  version: 1.0.0
servers: []
security: []
paths:
  /api/v2/communication/letters:
    post:
      tags:
        - Communication
      summary: Send a letter
      description: >-
        Sends a physical letter. The document must be a PDF file. Returns an ID
        for tracking.
      parameters:
        - schema:
            type: string
          in: header
          name: Idempotency-Key
          required: false
          description: >-
            A unique identifier for the request. If the same request is sent
            with the same idempotency key, it will be ignored.
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                document:
                  type: object
                  properties:
                    id:
                      type: string
                    fileName:
                      type: string
                  required:
                    - id
                    - fileName
                  additionalProperties: false
                  description: The document to send
                color:
                  type: boolean
                  default: false
                  description: >-
                    Whether to print the letter in color. Defaults to black and
                    white.
                toAddress:
                  type: object
                  properties:
                    name:
                      type: string
                      description: Recipient's name
                    address:
                      type: object
                      properties:
                        streetLines:
                          type: array
                          items:
                            type: string
                          minItems: 1
                        city:
                          type: string
                        state:
                          type: string
                        zipCode:
                          type: string
                      required:
                        - streetLines
                        - city
                        - state
                        - zipCode
                      additionalProperties: false
                      description: Recipient's mailing address
                  required:
                    - name
                    - address
                  additionalProperties: false
                fromAddress:
                  type: object
                  properties:
                    name:
                      type: string
                      description: Sender's name
                    address:
                      type: object
                      properties:
                        streetLines:
                          type: array
                          items:
                            type: string
                          minItems: 1
                        city:
                          type: string
                        state:
                          type: string
                        zipCode:
                          type: string
                      required:
                        - streetLines
                        - city
                        - state
                        - zipCode
                      additionalProperties: false
                      description: Sender's mailing address
                  required:
                    - name
                    - address
                  additionalProperties: false
                  description: Optional sender address (defaults to Sample Healthcare)
                metadata:
                  type: object
                  additionalProperties:
                    type: string
                  description: Optional metadata to include with the letter
              required:
                - document
                - toAddress
              additionalProperties: false
        required: true
      responses:
        '200':
          description: Letter sent successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  trackingId:
                    type: string
                    description: The letter ID for tracking the mail delivery
                required:
                  - trackingId
                additionalProperties: false
        '400':
          description: Default Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                    description: The error message.
                  message:
                    type: string
                    description: The message.
                  statusCode:
                    type: number
                    description: The status code.
                  details:
                    type: object
                    additionalProperties: {}
                    description: The details of the error
                additionalProperties: true
        '404':
          description: Default Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                    description: Not Found, the specified file does not exist.
                required:
                  - error
                additionalProperties: false
        '500':
          description: Default Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                    description: Internal server error while sending the letter.
                required:
                  - error
                additionalProperties: false
      x-codeSamples:
        - lang: Python
          source: |-
            import os
            from samplehc import SampleHealthcare

            client = SampleHealthcare(
                api_key=os.environ.get("SAMPLEHC_API_KEY"),  # This is the default and can be omitted
            )
            response = client.v2.communication.send_letter(
                document={
                    "id": "id",
                    "file_name": "fileName",
                },
                to_address={
                    "address": {
                        "city": "city",
                        "state": "state",
                        "street_lines": ["string"],
                        "zip_code": "zipCode",
                    },
                    "name": "name",
                },
            )
            print(response.tracking_id)

````