Omnisend Campaigns API

openapi: 3.0.0
info:
  contact: {}
  description: API for managing campaigns.
  title: Campaigns API
  version: 2026-preview
  x-api-evangelist:
    harvested: '2026-08-13'
    method: searched
    source: https://dash.readme.com/api/v1/api-registry/7moskuxtmsopb4bg
    source-note: Published by Omnisend on its own docs host api-docs.omnisend.com (ReadMe project @omnisend,
      branch v2026-03-15); registry document referenced by the reference page as oasPublicUrl.
paths:
  /campaigns:
    get:
      description: 'List campaigns with filtering, sorting, and cursor-based pagination.


        **Scopes:**

        `campaigns.read`


        **Rate Limiting:**

        This endpoint is rate limited to 400 requests per minute.


        **Filtering & sorting:**

        Supported query parameters: `nameContains`, `status`, `channel`, `type`, `parentCampaignID`, `createdAtFrom`/`createdAtTo`,
        `updatedAtFrom`/`updatedAtTo`, `sort`, `direction`, `limit`, `after`, `before`. Only these documented
        parameters are accepted; any unknown parameter returns 400.

        - `sort` accepts `createdAt`, `updatedAt`, or `name`; `direction` (`asc`/`desc`) is only valid
        together with `sort`.


        **Pagination:**

        This endpoint uses cursor-based pagination.

        - Use the `paging.cursors.after` value from the response to get the next page

        - Use the `paging.cursors.before` value to get the previous page

        - The `paging.hasMore` field indicates if more results are available

        - Maximum page size is 250 items. Default: 100

        - Do not send `after` and `before` together, and keep filters and sorting unchanged while paginating
        with a cursor'
      parameters:
      - $ref: '#/components/parameters/APIVersionHeader'
      - description: 'Number of items per page. Range: 1-250. Default: 100'
        in: query
        name: limit
        schema:
          type: integer
          minimum: 1
          maximum: 250
      - description: Opaque cursor for the next page
        in: query
        name: after
        schema:
          type: string
      - description: Opaque cursor for the previous page
        in: query
        name: before
        schema:
          type: string
      - description: 'Sort field. Default: createdAt'
        in: query
        name: sort
        schema:
          type: string
          enum:
          - createdAt
          - updatedAt
          - name
      - description: 'Sort direction. Default: desc'
        in: query
        name: direction
        schema:
          type: string
          enum:
          - asc
          - desc
      - description: Filter by status (repeatable for OR logic)
        in: query
        name: status
        explode: true
        schema:
          type: array
          items:
            enum:
            - error
            - onHold
            - sent
            - paused
            - started
            - stopped
            - expired
            - draft
            - scheduled
            - canceled
            type: string
      - description: Filter by name (partial match, max 200 characters)
        in: query
        name: nameContains
        schema:
          type: string
          maxLength: 200
      - description: Filter by message channel (repeatable for OR logic)
        in: query
        name: channel
        explode: true
        schema:
          type: array
          items:
            enum:
            - email
            - sms
            - push
            type: string
      - description: Filter by campaign type. Use `booster` to list only boosters, `abTest` to list only
          A/B test parents.
        in: query
        name: type
        schema:
          type: string
          enum:
          - regular
          - booster
          - abTest
      - description: Filter to boosters of the given parent campaign ID. Implies type=booster.
        in: query
        name: parentCampaignID
        schema:
          type: string
      - description: Filter campaigns created after this timestamp (ISO 8601, e.g. 2026-01-01T00:00:00Z)
        in: query
        name: createdAtFrom
        schema:
          type: string
          format: date-time
      - description: Filter campaigns created before this timestamp (ISO 8601, e.g. 2026-01-01T00:00:00Z)
        in: query
        name: createdAtTo
        schema:
          type: string
          format: date-time
      - description: Filter campaigns updated after this timestamp (ISO 8601, e.g. 2026-01-01T00:00:00Z)
        in: query
        name: updatedAtFrom
        schema:
          type: string
          format: date-time
      - description: Filter campaigns updated before this timestamp (ISO 8601, e.g. 2026-01-01T00:00:00Z)
        in: query
        name: updatedAtTo
        schema:
          type: string
          format: date-time
      responses:
        '200':
          description: List of campaigns with pagination
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CampaignsResponse'
        '400':
          description: Request contains invalid or missing fields
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ValidationProblem'
        '401':
          description: Authentication is missing or invalid
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '403':
          description: Insufficient permissions for this operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '410':
          description: API version has been retired
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RateLimitProblem'
        '500':
          description: Unexpected error occurred
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
      security:
      - Bearer:
        - campaigns.read
      - ApiKeyAuth: []
      summary: List campaigns with filtering, sorting, and cursor pagination
      tags:
      - Campaigns
    post:
      description: 'Create a new campaign draft.


        **Boosters (`type: booster`):**

        - The parent campaign (`boosterSettings.campaignID`) must be a regular email campaign in ''draft''
        or ''sent'' status; ''scheduled'' and ''started'' parents return 409.

        - Each parent campaign supports at most one booster; creating another returns 409. Delete the
        existing booster first to replace it.

        - `sendingSettings` is only allowed when the parent is already sent; for a draft parent provide
        `boosterSettings.delay` instead (max 240 hours) and the booster is scheduled automatically when
        the parent sends.


        **Scopes:**

        `campaigns.write`


        **Rate Limiting:**

        This endpoint is rate limited to 400 requests per minute.'
      parameters:
      - $ref: '#/components/parameters/APIVersionHeader'
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateCampaignRequest'
        description: Campaign data
        required: true
      responses:
        '201':
          description: Created campaign
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Campaign'
        '400':
          description: Request contains invalid or missing fields
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ValidationProblem'
        '401':
          description: Authentication is missing or invalid
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '403':
          description: Insufficient permissions for this operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '404':
          description: 'Booster only: parent campaign not found'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '409':
          description: 'Booster only: booster already exists for this campaign, or parent campaign status
            does not allow booster operations'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '410':
          description: API version has been retired
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '422':
          description: Campaign channel is not supported, or the store has no verified sender email to
            use when content.email.senderEmail is omitted
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RateLimitProblem'
        '500':
          description: Unexpected error occurred
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
      security:
      - Bearer:
        - campaigns.write
      - ApiKeyAuth: []
      summary: Create campaign
      tags:
      - Campaigns
  /campaigns/{id}:
    delete:
      description: 'Delete a campaign.


        **Scopes:**

        `campaigns.write`


        **Rate Limiting:**

        This endpoint is rate limited to 400 requests per minute.'
      parameters:
      - $ref: '#/components/parameters/APIVersionHeader'
      - description: Campaign ID
        in: path
        name: id
        required: true
        schema:
          type: string
      responses:
        '204':
          description: Campaign deleted successfully
        '400':
          description: Request contains invalid or missing fields
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ValidationProblem'
        '401':
          description: Authentication is missing or invalid
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '403':
          description: Insufficient permissions for this operation
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '409':
          description: Campaign status does not allow deletion
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '410':
          description: API version has been retired
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '422':
          description: Campaign type is not supported
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '429':
          description: Rate limit exceeded
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/RateLimitProblem'
        '500':
          description: Unexpected error occurred
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
      security:
      - Bearer:
        - campaigns.write
      - ApiKeyAuth: []
      summary: Delete campaign
      tags:
      - Campaigns
    get:
      description: 'Get a single campaign by ID.


        **Scopes:**

        `campaigns.read`


        **Rate Limiting:**

        This endpoint is rate limited to 400 requests per minute.'
      parameters:
      - $ref: '#/components/parameters/APIVersionHeader'
      - description: Campaign ID (24 character hexadecimal)
        in: path
        name: id
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Campaign
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Campaign'
        '400':
          description: Request contains invalid or missing fields
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ValidationProblem'
        '401':
          description: Authentication is missing or invalid
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '403':
          description: Insufficient permissions for this operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '404':
          description: Campaign not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '410':
          description: API version has been retired
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RateLimitProblem'
        '500':
          description: Unexpected error occurred
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
      security:
      - Bearer:
        - campaigns.read
      - ApiKeyAuth: []
      summary: Get campaign
      tags:
      - Campaigns
    patch:
      description: 'Update a campaign draft. Only campaigns in ''draft'' status can be updated; any other
        status returns 409.

        To change a campaign that is no longer a draft, copy it and edit the new draft copy.


        **Scopes:**

        `campaigns.write`


        **Rate Limiting:**

        This endpoint is rate limited to 400 requests per minute.'
      parameters:
      - $ref: '#/components/parameters/APIVersionHeader'
      - description: Campaign ID (24 character hexadecimal)
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateCampaignRequest'
        description: Campaign update data
        required: true
      responses:
        '200':
          description: Updated campaign
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Campaign'
        '400':
          description: Request contains invalid or missing fields
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ValidationProblem'
        '401':
          description: Authentication is missing or invalid
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '403':
          description: Insufficient permissions for this operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '404':
          description: Campaign not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '409':
          description: Campaign state does not allow modification
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '410':
          description: API version has been retired
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RateLimitProblem'
        '500':
          description: Unexpected error occurred
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
      security:
      - Bearer:
        - campaigns.write
      - ApiKeyAuth: []
      summary: Update campaign (draft status only)
      tags:
      - Campaigns
  /campaigns/{id}/ab-test/resume:
    post:
      description: 'Resume a stopped A/B test. Automatic winner selection becomes eligible to pick this
        campaign again.


        Available only while the campaign is in `stopped` status.


        **Scopes:**

        `campaigns.write`


        **Rate Limiting:**

        This endpoint is rate limited to 400 requests per minute.'
      parameters:
      - $ref: '#/components/parameters/APIVersionHeader'
      - description: Campaign ID (24 character hexadecimal)
        in: path
        name: id
        required: true
        schema:
          type: string
      responses:
        '204':
          description: A/B test resumed
        '400':
          description: Request contains invalid or missing fields
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ValidationProblem'
        '401':
          description: Authentication is missing or invalid
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '403':
          description: Insufficient permissions for this operation
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '404':
          description: Campaign not found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '409':
          description: Campaign status is not stopped
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '410':
          description: API version has been retired
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '422':
          description: Campaign is not an A/B test
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '429':
          description: Rate limit exceeded
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/RateLimitProblem'
        '500':
          description: Unexpected error occurred
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
      security:
      - Bearer:
        - campaigns.write
      - ApiKeyAuth: []
      summary: Resume A/B test
      tags:
      - Campaigns
  /campaigns/{id}/ab-test/stop:
    post:
      description: 'Halt the A/B test winner-selection phase. While stopped, automatic winner selection
        no longer considers this campaign until it is resumed.


        Available only while the campaign is in `started` status.


        **Scopes:**

        `campaigns.write`


        **Rate Limiting:**

        This endpoint is rate limited to 400 requests per minute.'
      parameters:
      - $ref: '#/components/parameters/APIVersionHeader'
      - description: Campaign ID (24 character hexadecimal)
        in: path
        name: id
        required: true
        schema:
          type: string
      responses:
        '204':
          description: A/B test stopped
        '400':
          description: Request contains invalid or missing fields
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ValidationProblem'
        '401':
          description: Authentication is missing or invalid
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '403':
          description: Insufficient permissions for this operation
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '404':
          description: Campaign not found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '409':
          description: Campaign status is not started
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '410':
          description: API version has been retired
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '422':
          description: Campaign is not an A/B test
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '429':
          description: Rate limit exceeded
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/RateLimitProblem'
        '500':
          description: Unexpected error occurred
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
      security:
      - Bearer:
        - campaigns.write
      - ApiKeyAuth: []
      summary: Stop A/B test
      tags:
      - Campaigns
  /campaigns/{id}/ab-test/winner:
    post:
      description: 'Manually pick a variant as the winner. The chosen variant is routed into the send
        pipeline immediately.


        **Scopes:**

        `campaigns.write`


        **Rate Limiting:**

        This endpoint is rate limited to 400 requests per minute.'
      parameters:
      - $ref: '#/components/parameters/APIVersionHeader'
      - description: Campaign ID (24 character hexadecimal)
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SelectABTestWinnerRequest'
        description: Winner variant selection
        required: true
      responses:
        '204':
          description: Winner selected
        '400':
          description: Request contains invalid or missing fields
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ValidationProblem'
        '401':
          description: Authentication is missing or invalid
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '403':
          description: Insufficient permissions for this operation
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '404':
          description: Campaign not found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '409':
          description: Campaign status does not allow winner selection
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '410':
          description: API version has been retired
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '422':
          description: Campaign is not an A/B parent
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '429':
          description: Rate limit exceeded
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/RateLimitProblem'
        '500':
          description: Unexpected error occurred
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
      security:
      - Bearer:
        - campaigns.write
      - ApiKeyAuth: []
      summary: Select A/B test winner
      tags:
      - Campaigns
  /campaigns/{id}/cancel:
    post:
      description: 'Cancel a campaign and mark it as canceled.


        **Cancelable source states:** `scheduled` or `paused` (all channel types), or `started` (email
        only). Any other status (e.g. `draft`, `sent`, `canceled`) returns 409.


        Supported cases:

        - Any scheduled or paused campaign (all channel types)

        - Started email campaigns


        **Note:** For started campaigns, cancellation is best-effort — messages already in flight may
        still be delivered.


        **Scopes:**

        `campaigns.write`


        **Rate Limiting:**

        This endpoint is rate limited to 400 requests per minute.'
      parameters:
      - $ref: '#/components/parameters/APIVersionHeader'
      - description: Campaign ID (24 character hexadecimal)
        in: path
        name: id
        required: true
        schema:
          type: string
      responses:
        '204':
          description: Campaign cancel initiated successfully
        '400':
          description: Request contains invalid or missing fields
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ValidationProblem'
        '401':
          description: Authentication is missing or invalid
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '403':
          description: Insufficient permissions for this operation
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '404':
          description: Campaign not found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '409':
          description: Campaign is not in a cancelable state (only scheduled, or started/paused email
            campaigns can be canceled)
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '410':
          description: API version has been retired
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '422':
          description: Campaign type is not supported
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '429':
          description: Rate limit exceeded
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/RateLimitProblem'
        '500':
          description: Unexpected error occurred
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
      security:
      - Bearer:
        - campaigns.write
      - ApiKeyAuth: []
      summary: Cancel campaign
      tags:
      - Campaigns
  /campaigns/{id}/copy:
    post:
      description: 'Create a draft copy of an existing campaign, copying content, audience, and settings
        from the original.

        The copy is a new draft campaign with its own ID; the original campaign is left unchanged.

        The copied campaign name will be prefixed with "Copy of: ".


        **Scopes:**

        `campaigns.write`


        **Rate Limiting:**

        This endpoint is rate limited to 400 requests per minute.'
      parameters:
      - $ref: '#/components/parameters/APIVersionHeader'
      - description: Campaign ID to copy (24 character hexadecimal)
        in: path
        name: id
        required: true
        schema:
          type: string
      responses:
        '201':
          description: Created draft copy of the campaign
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Campaign'
        '400':
          description: Request contains invalid or missing fields
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ValidationProblem'
        '401':
          description: Authentication is missing or invalid
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '403':
          description: Insufficient permissions for this operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '404':
          description: Campaign not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '410':
          description: API version has been retired
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '422':
          description: Campaign type is not supported
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RateLimitProblem'
        '500':
          description: Unexpected error occurred
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
      security:
      - Bearer:
        - campaigns.write
      - ApiKeyAuth: []
      summary: Copy campaign
      tags:
      - Campaigns
  /campaigns/{id}/send:
    post:
      description: 'Submit a campaign draft for sending. Only campaigns in ''draft'' status can be sent;
        to send a campaign again, copy it and send the copy.

        Supports both email and SMS campaigns. Behavior depends on the campaign''s sending strategy:


        - **Immediate**: Campaign will be sent immediately

        - **Scheduled**: Campaign will be queued for the scheduled time with optional timezone optimization


        **Scopes:**

        `campaigns.write`


        **Rate Limiting:**

        This endpoint is rate limited to 400 requests per minute.'
      parameters:
      - $ref: '#/components/parameters/APIVersionHeader'
      - description: Campaign ID (24 character hexadecimal)
        in: path
        name: id
        required: true
        schema:
          type: string
      responses:
        '204':
          description: Campaign send initiated successfully
        '400':
          description: Request contains invalid or missing fields
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ValidationProblem'
        '401':
          description: Authentication is missing or invalid
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '402':
          description: Payment is required to send this campaign
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '403':
          description: Insufficient permissions for this operation
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '404':
          description: Campaign not found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '409':
          description: Campaign state does not allow sending or content is invalid
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '410':
          description: API version has been retired
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Problem'
        '429':
          description: Rate limit exceeded
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/RateLimitProblem'
        '500':
          description: Unexpected error occurred
          content:
            '*/*':
              schema:
      

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# Full source: https://raw.githubusercontent.com/api-evangelist/omnisend/refs/heads/main/openapi/omnisend-campaigns-api-openapi.yml