Litmus Results API

openapi: 3.2.0
info:
  title: Litmus Legacy Previews Results API
  description: The Litmus Legacy Previews API provides REST endpoints for running email preview tests, spam filter tests, link-check tests, and code analysis against submitted email HTML. Tests are initiated by POSTing email content to the API and results are polled until rendering is complete. Authentication uses HTTP Basic Auth with Litmus account credentials.
  version: 1.0.0
  contact:
    name: Litmus Support
    url: https://www.litmus.com/support/
  termsOfService: https://www.litmus.com/terms-of-service/
servers:
- url: https://previews-api.litmus.com/api/v1
  description: Litmus Legacy Previews API Production Server
security:
- basicAuth: []
tags:
- name: Results
  description: Test result retrieval
paths:
  /tests/{testId}/previews:
    get:
      operationId: listTestPreviews
      summary: Litmus List email client previews for a test
      description: Returns the list of email client rendering results for a preview test. Each result includes the client identifier, rendering status, and screenshot URLs when the render is complete.
      tags:
      - Results
      parameters:
      - $ref: '#/components/parameters/testIdParam'
      responses:
        '200':
          description: List of client preview results
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/PreviewResult'
        '401':
          description: Invalid credentials
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Test not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
  /tests/{testId}/spam:
    get:
      operationId: getSpamTestResults
      summary: Litmus Get spam filter test results
      description: Returns spam filter test results for the specified test, including the result from each tested spam filter service. Each result shows whether the email was flagged as spam and the spam score where available.
      tags:
      - Results
      parameters:
      - $ref: '#/components/parameters/testIdParam'
      responses:
        '200':
          description: Spam filter test results
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/SpamResult'
        '401':
          description: Invalid credentials
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Test not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
  /tests/{testId}/links:
    get:
      operationId: getLinkCheckResults
      summary: Litmus Get link check results
      description: Returns the link-check results for all URLs found in the tested email HTML. Each entry indicates the URL, its HTTP status code, and whether the link was reachable at the time of testing.
      tags:
      - Results
      parameters:
      - $ref: '#/components/parameters/testIdParam'
      responses:
        '200':
          description: Link check results
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/LinkResult'
        '401':
          description: Invalid credentials
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Test not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Error:
      type: object
      description: An API error response
      required:
      - message
      properties:
        message:
          type: string
          description: Human-readable error message
          example: Authentication required
        code:
          type: string
          description: Machine-readable error code
          example: unauthorized
    PreviewResult:
      type: object
      description: Email client rendering result within a test
      properties:
        client:
          type: string
          description: Email client slug identifier
          example: GMAIL
        client_name:
          type: string
          description: Human-readable name of the email client
          example: Gmail
        status:
          type: string
          description: Rendering status for this client
          enum:
          - pending
          - processing
          - complete
          - failed
          - unavailable
          example: complete
        full_image_url:
          type: string
          format: uri
          description: URL to the full-size rendered screenshot
        thumb_image_url:
          type: string
          format: uri
          description: URL to the thumbnail rendered screenshot
        orientation:
          type: string
          description: Display orientation of the rendering
          enum:
          - desktop
          - mobile
          example: desktop
    LinkResult:
      type: object
      description: Link reachability check result for a single URL found in the email
      properties:
        url:
          type: string
          format: uri
          description: The URL that was checked
          example: https://www.example.com/landing-page
        status_code:
          type: integer
          description: HTTP status code returned when the URL was fetched
          example: 200
        reachable:
          type: boolean
          description: Whether the URL was successfully reachable
          example: true
        redirect_url:
          type: string
          format: uri
          description: Final URL after any HTTP redirects, if applicable
    SpamResult:
      type: object
      description: Spam filter check result for a single spam filter service
      properties:
        filter:
          type: string
          description: Name of the spam filter service checked
          example: SpamAssassin
        is_spam:
          type: boolean
          description: Whether the email was flagged as spam by this filter
          example: false
        score:
          type: number
          description: Spam score returned by the filter (scale varies by provider)
          example: 0.5
        threshold:
          type: number
          description: Spam score threshold above which the filter flags as spam
          example: 5.0
        status:
          type: string
          description: Status of the spam check
          enum:
          - pending
          - complete
          - failed
          example: complete
  parameters:
    testIdParam:
      name: testId
      in: path
      description: Numeric identifier of the email test
      required: true
      schema:
        type: integer
        example: 12345678
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic Auth using Litmus account username and password
externalDocs:
  description: Litmus Legacy Previews API Documentation
  url: https://docs.litmus.com/legacy-previews