Snov.io Email Verification API

openapi: 3.0.3
info:
  title: Snov.io Authentication Email Verification API
  description: Snov.io is a sales automation and lead generation platform. The REST API enables programmatic access to email finding, domain search, email verification, drip campaign management, email warm-up, prospect management, CRM pipeline, and webhook subscriptions. Authentication uses OAuth 2.0 client credentials to obtain short-lived Bearer tokens. All API operations consume credits from the account balance.
  version: '2.0'
  contact:
    name: Snov.io Support
    url: https://snov.io/knowledgebase/
  termsOfService: https://snov.io/terms-of-service/
  license:
    name: Proprietary
    url: https://snov.io/terms-of-service/
servers:
- url: https://api.snov.io
  description: Snov.io API server
tags:
- name: Email Verification
  description: Verify email deliverability and validity
paths:
  /v2/email-verification/start:
    post:
      tags:
      - Email Verification
      summary: Start email verification
      description: Initiate async verification of up to 10 email addresses. Returns a task_hash to poll for results.
      operationId: startEmailVerification
      security:
      - bearerAuth: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - emails
              properties:
                emails:
                  type: array
                  maxItems: 10
                  items:
                    type: string
                    format: email
                  example:
                  - john@example.com
                  - jane@example.com
                webhook_url:
                  type: string
                  format: uri
      responses:
        '200':
          description: Task started
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TaskStarted'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v2/email-verification/result:
    get:
      tags:
      - Email Verification
      summary: Get email verification results
      operationId: getEmailVerificationResult
      security:
      - bearerAuth: []
      parameters:
      - name: task_hash
        in: query
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Email verification results
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/EmailVerificationResult'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    TaskStarted:
      type: object
      properties:
        task_hash:
          type: string
          description: Unique identifier for the async task; use to poll for results
        status:
          type: string
          description: Current task status
    Error:
      type: object
      properties:
        error:
          type: string
          description: Error code
        message:
          type: string
          description: Human-readable error message
    EmailVerificationResult:
      type: object
      properties:
        email:
          type: string
          format: email
        status:
          type: string
          enum:
          - valid
          - unknown
          - not_valid
        format_valid:
          type: boolean
        mx_valid:
          type: boolean
        disposable:
          type: boolean
        gibberish:
          type: boolean
  responses:
    Unauthorized:
      description: Unauthorized — missing or invalid Bearer token
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: Obtain a Bearer token via POST /v1/oauth/access_token using client credentials. Tokens expire after 3600 seconds.