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

# Validate Single Email

> Validate a single email address



## OpenAPI

````yaml api-reference/openapi.yaml post /email/check
openapi: 3.0.3
info:
  title: OmniVerifier Public API
  description: Public API for email verification and credit management
  version: 1.0.0
  contact:
    name: OmniVerifier Support
    email: support@omniverifier.com
servers:
  - url: https://api.omniverifier.com/v1/validate
    description: API Server
security:
  - ApiKeyAuth: []
paths:
  /email/check:
    post:
      tags:
        - Deliverable Verification
      summary: Validate a single email
      description: Validate a single email address
      operationId: validateSingleEmail
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - email
              properties:
                email:
                  type: string
                  description: Email address to validate
                  example: user@example.com
      responses:
        '200':
          description: Successfully validated email
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    enum:
                      - valid
                      - invalid
                      - catch-all
                    description: Email validation status
                    example: valid
                  mail_server:
                    type: string
                    description: Mail server information
                    example: outlook.com
        '400':
          description: Bad request - validation error or insufficient credits
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
          description: Error message
          example: Invalid API key
        code:
          type: string
          description: Error code
          example: INVALID_API_KEY
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: API key for authentication

````