apis.yml

aid: neverbounce
name: NeverBounce
description: >-
  NeverBounce is an email verification and list cleaning service — a ZoomInfo company —
  that validates individual email addresses in real time and cleans bulk lists by checking
  syntax, mailbox existence, role addresses, disposable addresses, catch-all domains, and
  deliverability to reduce bounce rates for marketing, sales, and transactional senders.
  The NeverBounce v4 REST API at https://api.neverbounce.com/v4.2/ provides ten published
  operations covering single email checks (/single/check), bulk list jobs (create, parse,
  start, status, results, search, delete, download), account credit info, and the
  Proof-of-Engagement confirmation used by the browser widget, with JSON responses over
  HTTPS. Authentication uses a per-integration API key (format `secret_xxxx...`) passed as
  the `key` parameter in the query string or request body; `public_` keys drive the
  JavaScript widget and cannot call the standard API. Application errors — including
  authentication failure and throttling — are returned with an HTTP 200 and a `status`
  field rather than a 4xx, which is the defining runtime quirk of this API.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: true
  try_now: false
  public: true
  label: Self-serve signup with published per-credit pricing
  confidence: high
  source:
  - authentication
  - plans/neverbounce-plans-pricing.yml
  - https://www.neverbounce.com/pricing
  generated: '2026-08-13'
  method: searched
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/neverbounce.png
tags:
  - Email Verification
  - Email Validation
  - Email Hygiene
  - Deliverability
  - Marketing
  - List Cleaning
  - Data Quality
  - ZoomInfo
url: >-
  https://raw.githubusercontent.com/api-evangelist/neverbounce/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-08-13'
specificationVersion: '0.23'
apis:
- aid: neverbounce:v4-api
  name: NeverBounce API v4
  description: >-
    RESTful JSON API for email verification. Provides single email verification (`/single/check`), bulk
    job verification (`/jobs/create`, `/jobs/parse`, `/jobs/start`, `/jobs/status`, `/jobs/results`,
    `/jobs/search`, `/jobs/delete`, `/jobs/download`), account credit info, and Proof-of-Engagement
    (`/poe/confirm`) endpoints. GET and POST are interchangeable; PUT and DELETE are unsupported.
    Authentication uses a per-integration API key (`secret_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx`) passed via
    the `key` query/body parameter.
  humanURL: https://developers.neverbounce.com/docs/api-getting-started
  baseURL: https://api.neverbounce.com/v4
  tags:
  - Email Verification
  - REST
  - JSON
  - Deliverability
  properties:
  - type: Documentation
    url: https://developers.neverbounce.com/docs/api-getting-started
  - type: APIReference
    url: https://developers.neverbounce.com/reference/getting-started
  - type: Verifying an Email
    url: https://developers.neverbounce.com/docs/verifying-an-email
  - type: Verifying a List
    url: https://developers.neverbounce.com/docs/verifying-a-list
  - type: GitHub SDKs
    url: https://github.com/NeverBounce
- aid: neverbounce:neverbounce-account-api
  name: NeverBounce Account API
  description: Account credit balances and job counts by state.
  humanURL: https://developers.neverbounce.com/reference/account-info
  baseURL: https://api.neverbounce.com/v4
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/neverbounce-account-api-openapi.yml
  - type: Overlay
    url: overlays/neverbounce-account-overlay.yaml
- aid: neverbounce:neverbounce-jobs-api
  name: NeverBounce Jobs API
  description: Bulk list verification jobs — create, parse, start, status, results, search, delete, download.
  humanURL: https://developers.neverbounce.com/reference/jobs
  baseURL: https://api.neverbounce.com/v4
  tags:
  - Job
  tags_raw:
  - Jobs
  properties:
  - type: OpenAPI
    url: openapi/neverbounce-jobs-api-openapi.yml
  - type: Overlay
    url: overlays/neverbounce-jobs-overlay.yaml
  - type: Webhooks
    url: asyncapi/neverbounce-webhooks.yml
- aid: neverbounce:neverbounce-single-api
  name: NeverBounce Single API
  description: Real-time verification of a single email address.
  humanURL: https://developers.neverbounce.com/reference/single-check
  baseURL: https://api.neverbounce.com/v4
  tags:
  - Single
  properties:
  - type: OpenAPI
    url: openapi/neverbounce-single-api-openapi.yml
  - type: Overlay
    url: overlays/neverbounce-single-overlay.yaml
- aid: neverbounce:neverbounce-poe-api
  name: NeverBounce POE API
  description: >-
    Proof of Engagement. Server-side confirmation that a verification produced by the browser
    JavaScript widget genuinely came from NeverBounce, using the transaction_id and
    confirmation_token the widget issues.
  humanURL: https://developers.neverbounce.com/reference/widget-poe-confirm
  baseURL: https://api.neverbounce.com/v4
  tags:
  - POE
  - Widget
  properties:
  - type: OpenAPI
    url: openapi/neverbounce-poe-api-openapi.yml
  - type: Overlay
    url: overlays/neverbounce-poe-overlay.yaml
common:
  - type: AgenticAccess
    url: agentic-access/neverbounce-agentic-access.yml
  - type: DomainSecurity
    url: security/neverbounce-domain-security.yml
  - type: Authentication
    url: authentication/neverbounce-authentication.yml
  - type: Packages
    url: packages/neverbounce-packages.yml
  - type: SDKs
    url: packages/neverbounce-packages.yml
  - type: CLI
    url: cli/neverbounce-cli.yml
  - type: Components
    url: components/neverbounce-components.yml
  - type: Conventions
    url: conventions/neverbounce-conventions.yml
  - type: ErrorCatalog
    url: errors/neverbounce-problem-types.yml
  - type: DataModel
    url: data-model/neverbounce-data-model.yml
  - type: Conformance
    url: conformance/neverbounce-conformance.yml
  - type: Lifecycle
    url: lifecycle/neverbounce-lifecycle.yml
  - type: Deprecation
    url: lifecycle/neverbounce-lifecycle.yml
  - type: StatusPage
    url: https://status.neverbounce.com
  - type: ChangeLog
    url: changelog/neverbounce-changelog.yml
  - type: Plans
    url: plans/neverbounce-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/neverbounce-rate-limits.yml
  - type: Webhooks
    url: asyncapi/neverbounce-webhooks.yml
  - type: MCPServer
    url: mcp/neverbounce-mcp.yml
  - type: ToolCrosswalk
    url: mcp/neverbounce-tool-crosswalk.yml
  - type: AgentSkill
    url: skills/_index.yml
  - type: LLMsTxt
    url: llms/neverbounce-llms.txt
  - type: LlmsText
    url: https://developers.neverbounce.com/llms.txt
  - type: LinkedIn
    url: https://www.linkedin.com/company/neverbounce
  - type: Website
    url: https://www.neverbounce.com
  - type: Documentation
    url: https://developers.neverbounce.com/
  - type: DeveloperPortal
    url: https://developers.neverbounce.com/
  - type: APIReference
    url: https://developers.neverbounce.com/reference/getting-started
  - type: GettingStarted
    url: https://developers.neverbounce.com/docs/api-getting-started
  - type: GitHubOrganization
    url: https://github.com/NeverBounce
  - type: Pricing
    url: https://www.neverbounce.com/pricing
  - type: Signup
    url: https://app.neverbounce.com/register
  - type: Support
    url: https://www.neverbounce.com/contact
  - type: Blog
    url: https://www.neverbounce.com/blog
  - type: TermsOfService
    url: https://www.neverbounce.com/terms-of-use
  - type: PrivacyPolicy
    url: https://www.zoominfo.com/legal/privacy-policy
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 26
  pass: local-v1