Kickbox

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 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.

Documentation GitHub

Documentation

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Documentation

https://docs.kickbox.com

📖

APIReference

https://docs.kickbox.com/reference/single-verification

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GettingStarted

https://docs.kickbox.com/docs/using-the-api

Other Resources

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PHP SDK

https://github.com/kickboxio/kickbox-php

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Python SDK

https://github.com/kickboxio/kickbox-python

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Sandbox

https://raw.githubusercontent.com/api-evangelist/kickbox/refs/heads/main/sandbox/kickbox-sandbox.yml

🔗

APIsJSON

https://raw.githubusercontent.com/api-evangelist/kickbox/refs/heads/main/apis.yml

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API entry from apis.yml

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: APIReference
  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
- type: GettingStarted
  url: https://docs.kickbox.com/docs/using-the-api
- type: Sandbox
  url: sandbox/kickbox-sandbox.yml