Telnyx Email Suppressions API

openapi: 3.2.0
info:
  version: 2.0.0
  x-latency-category: responsive
  x-endpoint-cost: light
  title: Telnyx Email Suppressions API
  description: SIP trunking, SMS, MMS, Call Control and Telephony Data Services.
  contact:
    email: support@telnyx.com
servers:
- url: https://api.telnyx.com/v2
  description: Version 2.0.0 of the Telnyx API
security:
- bearerAuth: []
tags:
- name: Email Suppressions
  description: Recipient suppression records (`/v2/email_blocks`).
paths:
  /email_blocks:
    get:
      tags:
      - Email Suppressions
      summary: List suppressions
      description: 'Account-scoped list. Two mutually exclusive pagination modes:


        - **Offset**: `page[number]` (default 1) + `page[size]`

        (default 25, max 100). `meta` contains `total_pages`.

        - **Cursor**: `page[after]` and/or `page[before]` (opaque

        `Base.url_encode64` of `{"created_at","id"}`). Cannot combine

        with `page[number]`; `after`+`before` together is an error.

        `meta` contains `next_cursor` / `previous_cursor` (omitted when

        their flag is false).


        Sort defaults to `-created_at` (desc); only `created_at` is sortable.

        A `--` prefix is an error. `nil`/empty filter values are silently dropped.'
      operationId: listEmailBlocks
      parameters:
      - $ref: '#/components/parameters/BlocksPageNumber'
      - $ref: '#/components/parameters/BlocksPageSize'
      - $ref: '#/components/parameters/BlocksPageAfter'
      - $ref: '#/components/parameters/BlocksPageBefore'
      - $ref: '#/components/parameters/SortEmailBlocks'
      - $ref: '#/components/parameters/FilterReason'
      - $ref: '#/components/parameters/FilterDomainId'
      - $ref: '#/components/parameters/FilterCreatedAfter'
      - $ref: '#/components/parameters/FilterCreatedBefore'
      responses:
        '200':
          description: List of suppressions.
          content:
            application/json:
              schema:
                oneOf:
                - $ref: '#/components/schemas/EmailBlockListOffsetResponse'
                - $ref: '#/components/schemas/EmailBlockListCursorResponse'
              example:
                data:
                - id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  record_type: email_block
                  domain_id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  group_id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  from: string
                  to: string
                  reason: hard_bounce
                  source: feedback
                  scope: account
                  status: active
                  created_at: '2024-01-23T18:10:02.574Z'
                  updated_at: '2024-01-23T18:10:02.574Z'
                  expires_at: '2024-01-23T18:10:02.574Z'
                meta:
                  page_number: 0
                  page_size: 0
                  total_pages: 0
                  total_results: 0
        '400':
          $ref: '#/components/responses/ValidationErrorQuery'
        '401':
          $ref: '#/components/responses/email_Unauthorized'
        '406':
          $ref: '#/components/responses/FrameworkError'
    post:
      tags:
      - Email Suppressions
      summary: Create a manual suppression
      description: 'Creates a suppression with `reason: manual_block` and `source: manual`.

        Caller-supplied `reason` / `source` are **ignored**; `scope` is

        **derived** server-side from `domain_id` / `from` and is never

        trusted. Idempotent: if a matching row already exists (NULL-safe

        dedupe key: account_id, scope, to, reason, domain_id, from),

        returns the existing record with `200` (no new audit event).


        `bounce_category`, `dsn_code`, `meta`, and `group_id` are **not

        accepted** on the public surface. Use the unsubscribe-group

        suppression endpoint or the internal create surface for those.'
      operationId: createEmailBlock
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateEmailBlockRequest'
            example:
              to: spammer@bad.tld
              expires_at: '2026-12-31T23:59:59Z'
      responses:
        '200':
          description: Idempotent — matching suppression already existed.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EmailBlockResponse'
              example:
                data:
                  id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  record_type: email_block
                  domain_id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  group_id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  from: string
                  to: string
                  reason: hard_bounce
                  source: feedback
                  scope: account
                  status: active
                  created_at: '2024-01-23T18:10:02.574Z'
                  updated_at: '2024-01-23T18:10:02.574Z'
                  expires_at: '2024-01-23T18:10:02.574Z'
        '201':
          description: Created.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EmailBlockResponse'
              example:
                data:
                  id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  record_type: email_block
                  domain_id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  group_id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  from: string
                  to: string
                  reason: hard_bounce
                  source: feedback
                  scope: account
                  status: active
                  created_at: '2024-01-23T18:10:02.574Z'
                  updated_at: '2024-01-23T18:10:02.574Z'
                  expires_at: '2024-01-23T18:10:02.574Z'
        '401':
          $ref: '#/components/responses/email_Unauthorized'
        '406':
          $ref: '#/components/responses/FrameworkError'
        '422':
          $ref: '#/components/responses/ChangesetError'
  /email_blocks/export:
    get:
      tags:
      - Email Suppressions
      summary: Export suppressions as CSV
      description: 'Streams the account''s suppressions as a chunked CSV (server-side

        cursor; never materialized). Content-type `text/csv`, header

        `Content-Disposition: attachment; filename="email_blocks_export.csv"`.


        Filters (`filter[reason]`, `filter[domain_id]`,

        `filter[created_after]`, `filter[created_before]`) are the only

        params that affect output. `sort` and `page[*]` are **parsed**

        (bad values still produce `400`) but **ignored** — rows stream

        `ORDER BY created_at ASC, id ASC` with no pagination.


        CSV columns: `id,to,from,reason,source,scope,status,domain_id,

        created_at,updated_at,expires_at,group_id,bounce_category,dsn_code,

        meta` (15 columns). The first 12 columns are the stable native

        signature; `bounce_category`, `dsn_code`, and `meta` are optional

        backup fields (empty when unset). The CSV carries the `group_id`

        column so group-scoped suppressions'' group link survives the

        export (empty for account-scope rows).'
      operationId: exportEmailBlocks
      parameters:
      - $ref: '#/components/parameters/SortEmailBlocks'
      - $ref: '#/components/parameters/BlocksPageNumber'
      - $ref: '#/components/parameters/BlocksPageSize'
      - $ref: '#/components/parameters/FilterReason'
      - $ref: '#/components/parameters/FilterDomainId'
      - $ref: '#/components/parameters/FilterCreatedAfter'
      - $ref: '#/components/parameters/FilterCreatedBefore'
      responses:
        '200':
          description: CSV stream.
          content:
            text/csv:
              schema:
                type: string
                description: CSV with header row `id,to,from,reason,source,scope,status,domain_id,created_at,updated_at,expires_at,group_id,bounce_category,dsn_code,meta`.
              example: string
        '400':
          $ref: '#/components/responses/ValidationErrorQuery'
        '401':
          $ref: '#/components/responses/email_Unauthorized'
        '406':
          $ref: '#/components/responses/FrameworkError'
  /email_blocks/{id}:
    parameters:
    - $ref: '#/components/parameters/PathId'
    delete:
      tags:
      - Email Suppressions
      summary: Soft-delete a suppression
      description: 'Soft-deletes (status → `removed`; tombstone retained). A `removed`

        audit event is appended unless the block was already `removed`

        (idempotent — returns the existing row with `200` and no new event).

        Mutates `updated_at`.'
      operationId: deleteEmailBlock
      responses:
        '200':
          description: The post-deletion record (status `removed`).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EmailBlockResponse'
              example:
                data:
                  id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  record_type: email_block
                  domain_id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  group_id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  from: string
                  to: string
                  reason: hard_bounce
                  source: feedback
                  scope: account
                  status: active
                  created_at: '2024-01-23T18:10:02.574Z'
                  updated_at: '2024-01-23T18:10:02.574Z'
                  expires_at: '2024-01-23T18:10:02.574Z'
        '401':
          $ref: '#/components/responses/email_Unauthorized'
        '404':
          $ref: '#/components/responses/BlocksNotFound'
        '406':
          $ref: '#/components/responses/FrameworkError'
        '422':
          $ref: '#/components/responses/ChangesetError'
    get:
      tags:
      - Email Suppressions
      summary: Retrieve a suppression
      operationId: showEmailBlock
      responses:
        '200':
          description: The suppression.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EmailBlockResponse'
              example:
                data:
                  id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  record_type: email_block
                  domain_id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  group_id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  from: string
                  to: string
                  reason: hard_bounce
                  source: feedback
                  scope: account
                  status: active
                  created_at: '2024-01-23T18:10:02.574Z'
                  updated_at: '2024-01-23T18:10:02.574Z'
                  expires_at: '2024-01-23T18:10:02.574Z'
        '401':
          $ref: '#/components/responses/email_Unauthorized'
        '404':
          $ref: '#/components/responses/BlocksNotFound'
        '406':
          $ref: '#/components/responses/FrameworkError'
      description: Returns the account-owned suppression identified by ID. Cross-account lookups and malformed IDs return `404` without exposing another account’s data.
  /email_blocks/{id}/events:
    parameters:
    - $ref: '#/components/parameters/PathId'
    get:
      tags:
      - Email Suppressions
      summary: List audit events for a suppression
      description: 'Offset pagination only (`page[number]` default 1, `page[size]`

        default **50**, max 100). No `sort`, no `filter`, no cursor —

        ordering is fixed `desc occurred_at, desc id`. Verifies the block

        belongs to the account first (cross-account → 404).'
      operationId: listEmailBlockEvents
      parameters:
      - $ref: '#/components/parameters/BlocksPageNumber'
      - name: page[size]
        in: query
        description: Page size (default 50, max 100).
        schema:
          type: integer
          minimum: 1
          maximum: 100
          default: 50
      responses:
        '200':
          description: Audit events (newest-first).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EmailBlockEventListResponse'
              example:
                data:
                - id: 3fa85f64-5717-4562-b3fc-2c963f66afa6
                  record_type: email_block_event
                  event_type: created
                  reason: string
                  source: string
                  actor: string
                  occurred_at: '2024-01-23T18:10:02.574Z'
                meta:
                  page_number: 0
                  page_size: 0
                  total_pages: 0
                  total_results: 0
        '400':
          $ref: '#/components/responses/ValidationErrorQuery'
        '401':
          $ref: '#/components/responses/email_Unauthorized'
        '404':
          $ref: '#/components/responses/BlocksNotFound'
        '406':
          $ref: '#/components/responses/FrameworkError'
components:
  parameters:
    FilterCreatedBefore:
      name: filter[created_before]
      in: query
      description: '`created_at < value` (ISO 8601).'
      schema:
        type: string
        format: date-time
    BlocksPageNumber:
      name: page[number]
      in: query
      description: Offset page number (≥1, default 1).
      schema:
        type: integer
        minimum: 1
        default: 1
    BlocksPageBefore:
      name: page[before]
      in: query
      description: Opaque cursor (see `page[after]`). Mutually exclusive with `page[after]` and `page[number]`.
      schema:
        type: string
    PathId:
      name: id
      in: path
      required: true
      description: Resource UUID. Malformed UUIDs are treated as not-found (not 400).
      schema:
        type: string
        format: uuid
    BlocksPageSize:
      name: page[size]
      in: query
      description: Page size (1–100, default 25).
      schema:
        type: integer
        minimum: 1
        maximum: 100
        default: 25
    SortEmailBlocks:
      name: sort
      in: query
      description: Sort field. Leading `-` = desc; only `created_at` is sortable. Default `-created_at`. `--` is an error.
      schema:
        type: string
        default: -created_at
        enum:
        - created_at
        - -created_at
    FilterCreatedAfter:
      name: filter[created_after]
      in: query
      description: '`created_at > value` (ISO 8601).'
      schema:
        type: string
        format: date-time
    FilterDomainId:
      name: filter[domain_id]
      in: query
      description: Exact-match filter on domain_id (UUID).
      schema:
        type: string
        format: uuid
    BlocksPageAfter:
      name: page[after]
      in: query
      description: Opaque cursor (`Base.url_encode64` of `{"created_at","id"}`). Cursor mode; mutually exclusive with `page[number]` and `page[before]`.
      schema:
        type: string
    FilterReason:
      name: filter[reason]
      in: query
      description: Exact-match filter on reason.
      schema:
        $ref: '#/components/schemas/Reason'
  responses:
    BlocksNotFound:
      description: Resource not found (cross-account lookups and malformed UUIDs also return 404 — no leak).
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorList'
          example:
            errors:
            - code: '10001'
              title: Not Found
              detail: The requested email block was not found
    FrameworkError:
      description: 'Framework-rendered error (e.g. 406 Not Acceptable, 405 Method Not

        Allowed, 415 Unsupported Media Type). HTTP status matches the error

        and the body `code` carries that same status (e.g. `"406"`, not a

        hardcoded `"500"`). The explicit `500.json` clause still emits

        `code: "500"` for genuine 500s.

        '
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorList'
          example:
            errors:
            - code: '406'
              title: Not Acceptable
              detail: Not Acceptable
    ChangesetError:
      description: Validation error (changeset or internal `Params`). One error object per field, `source.pointer /data/attributes/<field>`.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorList'
          example:
            errors:
            - code: '10015'
              title: Validation Failed
              detail: can't be blank
              source:
                pointer: /data/attributes/to
    email_Unauthorized:
      description: Missing or invalid gateway auth.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorList'
          example:
            errors:
            - code: '10007'
              title: Unauthorized
              detail: Missing authentication
    ValidationErrorQuery:
      description: Query-param validation error (`source.pointer /<field>`).
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorList'
          example:
            errors:
            - code: '10015'
              title: Validation Failed
              detail: is invalid
              source:
                pointer: /filter[reason]
  schemas:
    OffsetMeta:
      type: object
      required:
      - page_number
      - page_size
      - total_pages
      - total_results
      properties:
        page_number:
          type: integer
        page_size:
          type: integer
        total_pages:
          type: integer
        total_results:
          type: integer
    EmailBlock:
      type: object
      required:
      - id
      - record_type
      - to
      - reason
      - source
      - scope
      - status
      - created_at
      - updated_at
      properties:
        id:
          type: string
          format: uuid
        record_type:
          type: string
          enum:
          - email_block
          description: View-only discriminator.
        domain_id:
          type: string
          format: uuid
          nullable: true
          description: '`null` ⇒ account scope. Stored on the row; exposed here.'
        group_id:
          type: string
          format: uuid
          nullable: true
          description: '`null` ⇒ global; set ⇒ group-scoped opt-out.'
        from:
          type: string
          nullable: true
          description: '`null` ⇒ not address-scope. (schema: from_address)'
        to:
          type: string
          description: 'Normalized recipient. (schema: to_address)'
        reason:
          $ref: '#/components/schemas/Reason'
        source:
          $ref: '#/components/schemas/email_Source'
        scope:
          $ref: '#/components/schemas/Scope'
        status:
          $ref: '#/components/schemas/Status'
        created_at:
          type: string
          format: date-time
        updated_at:
          type: string
          format: date-time
        expires_at:
          type: string
          format: date-time
          nullable: true
          description: 'Optional expiration time. An active row stops matching

            send-time suppression checks as soon as `expires_at <= now()`.

            A maintenance worker later transitions the row to `status: expired`

            and appends an `expired` audit event (normally within 15 minutes).

            '
      description: 'Suppression record. Schema fields hidden by the view:

        `account_id`, `bounce_category`, `dsn_code`, `meta`.

        '
    email_Source:
      type: string
      enum:
      - feedback
      - manual
      - import
      - system
    EmailBlockResponse:
      type: object
      required:
      - data
      properties:
        data:
          $ref: '#/components/schemas/EmailBlock'
    CreateEmailBlockRequest:
      type: object
      required:
      - to
      properties:
        to:
          type: string
          description: 'Recipient address (normalized: trim + lower-case).'
        from:
          type: string
          nullable: true
          description: Sender address (normalized). `null` ⇒ account/domain scope.
        domain_id:
          type: string
          format: uuid
          nullable: true
          description: '`null` ⇒ account scope.'
        expires_at:
          type: string
          format: date-time
          nullable: true
      description: '`reason`/`source` are forced to `manual_block`/`manual` (ignored if

        supplied). `scope` is derived. `bounce_category`/`dsn_code`/`meta`/

        `group_id` are not accepted on the public surface.

        '
    CursorMeta:
      type: object
      required:
      - page_size
      - has_next
      - has_previous
      properties:
        page_size:
          type: integer
        next_cursor:
          type: string
          description: Omitted when `has_next` is false.
        previous_cursor:
          type: string
          description: Omitted when `has_previous` is false.
        has_next:
          type: boolean
        has_previous:
          type: boolean
    Reason:
      type: string
      enum:
      - hard_bounce
      - spam_complaint
      - unsubscribe
      - invalid
      - manual_block
    EmailBlockEventListResponse:
      type: object
      required:
      - data
      - meta
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/EmailBlockEvent'
        meta:
          $ref: '#/components/schemas/OffsetMeta'
    EmailBlockEvent:
      type: object
      required:
      - id
      - record_type
      - event_type
      - reason
      - source
      - actor
      - occurred_at
      properties:
        id:
          type: string
          format: uuid
        record_type:
          type: string
          enum:
          - email_block_event
          description: View-only.
        event_type:
          type: string
          enum:
          - created
          - removed
          - expired
          - override_used
        reason:
          type: string
          description: Free-text snapshot of the block's reason at event time.
        source:
          type: string
          description: Free-text snapshot of the block's source at event time.
        actor:
          type: string
          description: Free-text (`user_id`/`org_id`/`api_key`/`dev_bypass`/`system`/`manual`).
        meta:
          type: object
          nullable: true
          additionalProperties: true
          description: '`null` when the schema field is nil (the context usually sets it to `{}`).'
        occurred_at:
          type: string
          format: date-time
    ErrorList:
      type: object
      required:
      - errors
      properties:
        errors:
          type: array
          items:
            $ref: '#/components/schemas/BlocksErrorObject'
    BlocksErrorObject:
      type: object
      required:
      - code
      - title
      - detail
      properties:
        code:
          type: string
          description: 'Error codes: `10001` (Not Found), `10007` (Unauthorized),

            `10015` (Validation Failed), `10019` (Internal — import create

            fallback), `40901` (Conflict), `500` (framework/catch-all).

            '
        title:
          type: string
        detail:
          type: string
        source:
          type: object
          properties:
            pointer:
              type: string
          description: '`/data/attributes/<field>` for changeset/Params; `/<field>` for query-param errors.'
    EmailBlockListOffsetResponse:
      type: object
      required:
      - data
      - meta
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/EmailBlock'
        meta:
          $ref: '#/components/schemas/OffsetMeta'
    Scope:
      type: string
      enum:
      - account
      - domain
      - address
      description: Derived server-side from `domain_id`/`from`; never trusted from the caller.
    Status:
      type: string
      enum:
      - active
      - expired
      - removed
    EmailBlockListCursorResponse:
      type: object
      required:
      - data
      - meta
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/EmailBlock'
        meta:
          $ref: '#/components/schemas/CursorMeta'
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API key
      description: 'Telnyx API key supplied as `Authorization: Bearer <token>`. In production, auth may be validated by the API gateway and forwarded via Telnyx auth headers.'
    Payment:
      type: apiKey
      in: header
      name: Authorization
      description: 'Machine Payment Protocol credential used on paid retries, sent as `Authorization: Payment ...`. Obtained by paying a challenge returned in the `WWW-Authenticate` header of a 402 response. This is not a Telnyx API key; initial challenge requests use standard bearer authentication instead.'
    agent-memory_bearerAuth:
      type: http
      scheme: bearer
      description: Telnyx API key
    bearerAuth:
      type: http
      scheme: bearer
    branded-calling_bearerAuth:
      type: http
      scheme: bearer
      description: Telnyx API key. Generate one at https://portal.telnyx.com/#/app/api-keys.
    collections_bearerAuth:
      type: http
      scheme: bearer
      description: Telnyx API key. Collections and results are automatically scoped to the authenticated user's organization.
    number-reputation_bearerAuth:
      type: http
      scheme: bearer
      description: Telnyx API key. Generate one at https://portal.telnyx.com/#/app/api-keys.
    oauthClientAuth:
      type: oauth2
      flows:
        clientCredentials:
          tokenUrl: https://api.telnyx.com/v2/oauth/token
          scopes:
            admin: Administrative access to Telnyx resources
        authorizationCode:
          authorizationUrl: https://api.telnyx.com/v2/oauth/authorize
          tokenUrl: https://api.telnyx.com/v2/oauth/token
          refreshUrl: https://api.telnyx.com/v2/oauth/token
          scopes:
            admin: Administrative access to Telnyx resources
      description: OAuth 2.0 authentication for Telnyx API and MCP integrations
    outbound-voice-profiles_bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
    pronunciation-dicts_bearerAuth:
      type: http
      scheme: bearer
      description: Telnyx API v2 key. Obtain from https://portal.telnyx.com
    rcs-registration_bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API key
    stored-payment-transactions_bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
    transcriptions-search_bearerAuth:
      type: http
      scheme: bearer
      description: Telnyx API key. Results are automatically scoped to the authenticated user's organization.
    web-search_bearerAuth:
      type: http
      scheme: bearer
      description: Telnyx API key
x-service-info:
  categories:
  - communication
  - developer-tools
  docs:
    apiReference: https://developers.telnyx.com
    homepage: https://telnyx.com
    llms: https://telnyx.com/llms.txt