Kickbox

Kickbox is an email verification and list cleaning service that helps senders improve deliverability by detecting invalid, disposable, role-based, and risky email addresses before they enter mailing lists. The platform offers real-time single verification, bulk batch verification, and a deliverability monitoring suite. Kickbox provides a simple HTTPS REST API authenticated by API key returning structured verification results with reason codes.

1 APIs 0 Features

Email VerificationEmail ValidationDeliverabilityData QualityEmail

APIs

Kickbox Email Verification API

REST API for verifying the deliverability of email addresses in real time. Returns a result (deliverable, undeliverable, risky, unknown), a reason code, plus flags for role addr...

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GitHub Organization

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aid: kickbox
name: Kickbox
description: >-
  Kickbox is an email verification and list cleaning service that helps senders
  improve deliverability by detecting invalid, disposable, role-based, and
  risky email addresses before they enter mailing lists. The platform offers
  real-time single verification, bulk batch verification, and a deliverability
  monitoring suite. Kickbox provides a simple HTTPS REST API authenticated by
  API key returning structured verification results with reason codes.
type: Index
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
tags:
  - Email Verification
  - Email Validation
  - Deliverability
  - Data Quality
  - Email
url: >-
  https://raw.githubusercontent.com/api-evangelist/kickbox/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.19'
apis:
  - aid: kickbox:verification-api
    name: Kickbox Email Verification API
    description: >-
      REST API for verifying the deliverability of email addresses in real
      time. Returns a result (deliverable, undeliverable, risky, unknown), a
      reason code, plus flags for role addresses, disposable domains, and free
      email providers. Authentication uses an API key supplied as a query
      string parameter or in the Authorization header. Sandbox mode is
      available for testing without consuming credits.
    humanURL: https://docs.kickbox.com
    baseURL: https://api.kickbox.com/v2
    tags:
      - Email Verification
      - Deliverability
      - Validation
    properties:
      - type: Documentation
        url: https://docs.kickbox.com
      - type: API Reference
        url: https://docs.kickbox.com/reference/single-verification
      - type: PHP SDK
        url: https://github.com/kickboxio/kickbox-php
      - type: Python SDK
        url: https://github.com/kickboxio/kickbox-python

common:
  - type: Website
    url: https://kickbox.com
  - type: Documentation
    url: https://docs.kickbox.com
  - type: Pricing
    url: https://kickbox.com/pricing
  - type: Sign Up
    url: https://app.kickbox.com/signup
  - type: GitHub Organization
    url: https://github.com/kickboxio
  - type: Support
    url: https://kickbox.com/support
maintainers:
  - FN: Kin Lane
    email: [email protected]