Impact Unsubscribed Contacts API

openapi: 3.2.0
info:
  title: Brand API - Programs Unsubscribed Contacts API
  description: API for managing your programs (campaigns) on impact.com. This includes retrieving program details and managing unsubscribed contacts from your outreach communications.
  version: v14
servers:
- url: https://api.impact.com
tags:
- name: Unsubscribed Contacts
paths:
  /Advertisers/{AccountSID}/Campaigns/{CampaignId}/UnsubscribedContacts:
    get:
      summary: List Unsubscribed Contacts
      description: Retrieves a paginated list of all contacts who have unsubscribed from a specific program's Outreach communications.
      operationId: listUnsubscribedContacts
      tags:
      - Unsubscribed Contacts
      parameters:
      - name: AccountSID
        in: path
        required: true
        schema:
          type: string
      - name: CampaignId
        in: path
        required: true
        description: The unique identifier for the program.
        schema:
          type: integer
      - name: PartnerId
        in: query
        description: Filter by partner ID.
        schema:
          type: integer
      - name: UserEmail
        in: query
        description: Filter by a specific user email.
        schema:
          type: string
          format: email
      - name: Page
        in: query
        description: The page number to retrieve, starting at 0.
        schema:
          type: integer
          default: 0
      - name: PageSize
        in: query
        description: The number of items per page. Maximum is 1000.
        schema:
          type: integer
          default: 20
          maximum: 1000
      responses:
        '200':
          description: A paginated list of unsubscribed contacts.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UnsubscribedContactsResponse'
    post:
      summary: Unsubscribe a Contact
      description: Unsubscribes a contact from a specific program's Outreach communications on behalf of a partner.
      operationId: unsubscribeContact
      tags:
      - Unsubscribed Contacts
      parameters:
      - name: AccountSID
        in: path
        required: true
        schema:
          type: string
      - name: CampaignId
        in: path
        required: true
        description: The unique identifier for the program.
        schema:
          type: integer
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              required:
              - PartnerId
              - UserEmail
              properties:
                PartnerId:
                  type: integer
                  description: The unique identifier for the Partner associated with the contact.
                UserEmail:
                  type: string
                  format: email
                  description: The email address of the contact to unsubscribe.
      responses:
        '200':
          description: A confirmation object indicating success.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SuccessUriResponse'
components:
  schemas:
    UnsubscribedContact:
      type: object
      properties:
        UserEmail:
          type: string
          format: email
          description: The email address of the unsubscribed contact.
          example: partnerA@mail.com
        PartnerId:
          type: integer
          description: The unique identifier of the partner associated with the contact.
          example: 1234
        CreatedAt:
          type: string
          format: date-time
          description: The date and time the unsubscribe was created.
          example: '2026-02-05T12:13:08Z'
        UpdatedAt:
          type: string
          format: date-time
          description: The date and time the unsubscribe was last updated.
          example: '2026-02-05T12:13:08Z'
    UnsubscribedContactsResponse:
      type: object
      properties:
        Page:
          type: integer
          description: The current page number. Starts at 0.
          example: 0
        NumPages:
          type: integer
          description: The total number of pages available.
          example: 1
        PageSize:
          type: integer
          description: The number of items per page. The maximum is 1000.
          example: 20
        Total:
          type: integer
          description: The total number of unsubscribed contact records.
          example: 1
        Start:
          type: integer
          description: The index of the first item on the current page.
          example: 0
        End:
          type: integer
          description: The index of the last item on the current page.
          example: 1
        Uri:
          type: string
          format: uri-reference
          description: The URI for the current page of results.
          example: /UnsubscribedContacts?page=0&size=20
        FirstPageUri:
          type: string
          format: uri-reference
          description: The URI for the first page of results.
          example: /UnsubscribedContacts?page=0&size=20
        PreviousPageUri:
          type: string
          format: uri-reference
          nullable: true
          description: The URI for the previous page of results, if any.
          example: ''
        NextPageUri:
          type: string
          format: uri-reference
          nullable: true
          description: The URI for the next page of results, if any.
          example: ''
        LastPageUri:
          type: string
          format: uri-reference
          description: The URI for the last page of results.
          example: /UnsubscribedContacts?page=0&size=20
        Results:
          type: array
          description: The list of unsubscribed contact objects on this page.
          items:
            $ref: '#/components/schemas/UnsubscribedContact'
    SuccessUriResponse:
      type: object
      properties:
        Status:
          type: string
          description: Indicates whether the operation was successful.
          example: OK
        Uri:
          type: string
          format: uri-reference
          description: The unique reference to the affected resource.