> ## Documentation Index
> Fetch the complete documentation index at: https://docs.revenuebase.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Verify a single email address

> Verifies one email address synchronously. Returns `Valid`, `Invalid`, or `Unknown`. Set `metadata=true` to include MX record presence, email provider, security gateway, and failure reason. Deducts 1 credit on `Valid` or `Invalid` results. Rate limited to 5 request per second.

**Errors**
- `402` — Insufficient credits. Recharge your account before retrying.



## OpenAPI

````yaml https://api.revenuebase.ai/v2/openapi.json post /v2/email/verify
openapi: 3.1.0
info:
  title: Revenuebase API v2
  version: 0.1.0
servers:
  - url: https://api.revenuebase.ai
security: []
paths:
  /v2/email/verify:
    post:
      tags:
        - Email
      summary: Verify a single email address
      description: >-
        Verifies one email address synchronously. Returns `Valid`, `Invalid`, or
        `Unknown`. Set `metadata=true` to include MX record presence, email
        provider, security gateway, and failure reason. Deducts 1 credit on
        `Valid` or `Invalid` results. Rate limited to 5 request per second.


        **Errors**

        - `402` — Insufficient credits. Recharge your account before retrying.
      operationId: verify_email_v2_email_verify_post
      parameters:
        - name: metadata
          in: query
          required: false
          schema:
            type: boolean
            description: Include detailed metadata in response
            default: false
            title: Metadata
          description: Include detailed metadata in response
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RealTimeEmailRequest'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                title: Response Verify Email V2 Email Verify Post
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
      security:
        - APIKeyHeader: []
      x-codeSamples:
        - lang: Python
          label: Python SDK
          source: |-
            from revenuebase_sdk import RevenuebaseClient

            client = RevenuebaseClient()

            result = client.email.verify(email="user@example.com")
            print(result.status)  # "Valid", "Invalid", or "Unknown"
components:
  schemas:
    RealTimeEmailRequest:
      properties:
        email:
          type: string
          format: email
          title: Email
      type: object
      required:
        - email
      title: RealTimeEmailRequest
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError
  securitySchemes:
    APIKeyHeader:
      type: apiKey
      in: header
      name: x-key

````