openapi: 3.1.0
info:
  title: Azure Communication Services REST Email API
  description: Azure Communication Services REST APIs provide messaging, telephony, identity, chat, and email capabilities. Authentication uses HMAC SHA256 or Azure AD tokens.
  version: '2024-08-01'
servers:
- url: https://{resource}.communication.azure.com
  variables:
    resource:
      default: myresource
security:
- hmac: []
tags:
- name: Email
paths:
  /emails:send:
    post:
      operationId: sendEmail
      summary: ACS Send email
      description: Queues an email for delivery.
      tags:
      - Email
      parameters:
      - name: api-version
        in: query
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '202':
          description: Email accepted
          headers:
            Operation-Location:
              schema:
                type: string
components:
  securitySchemes:
    hmac:
      type: apiKey
      in: header
      name: Authorization
      description: HMAC-SHA256 signed Authorization header
externalDocs:
  description: Azure Communication Services REST API Documentation
  url: https://learn.microsoft.com/en-us/rest/api/communication/
x-generated-from: https://learn.microsoft.com/en-us/rest/api/communication/
x-generated-by: claude-crawl-2026-05-08