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② 後台搜尋「Postcode Checkout address validation for contactform 7」→ 直接安裝（推薦）
原文外掛簡介
This plugin adds postcode and address validation to Contact Form 7, with support for all configuration countries via Postcode.nl (or another provider of your choice). Instantly verify if the provided postcode, street, and house number are valid, reducing incorrect submissions.
Features
✅ Easy to use – Quick setup and seamless integration with your WooCommerce checkout.
✅ Accurate address validation – Verify customer data instantly using reliable postcode sources such as Postcode EU, PostcodeAPI, and Pro6PP.
✅ Dutch & international support – Works with national (The Netherlands) and international addresses across: The Netherlands, Belgium, Germany, Luxembourg, Austria, Switzerland, France, United Kingdom, Spain, Denmark, Norway, Finland, and Sweden.
✅ Fully configurable – Adjust validation rules and settings to match your webshop’s workflow.
✅ Fully functional test environment available – Try it risk-free before choosing your databroker and see how much time you save!
Requirements
⚙️ You can create a free Postcode Checkout account and fully test the plugin before choosing your databroker.
⚙️ This plugin requires an Postcode Checkout license to perform real address validation and autocompletion. Licenses can be puchased at: https://www.postcode-checkout.nl/en/pricing
⚙️ This plugin requires an active postcode database account from one of our supported databrokers (i.e. Postcode EU, PostcodeAPI, Pro6PP, Nederland Postcode)
* PostcodeEU
* PostcodeAPI
* Pro6PP
* Nederland Postcode
External services
This plugin connects to the following external services:
Postcode Checkout by CodeBrain BV
Service URL: Postcode Checkout dashboard
Privacy policy: Privacy Policy
Terms: Terms and Conditions
Purpose: validates the merchant API key and performs national and international address lookup, autocomplete suggestions, and address detail retrieval.
When requests are sent: when an administrator saves or validates the plugin API key, and when a visitor uses address validation or autocomplete in a Contact Form 7 form where this plugin is enabled.
Data sent: the API key in the Authorization header, the site URL in the Referer header, a User-Agent string containing the plugin name and author, and lookup data such as country, search query, postcode, house number, house number addition, selected address identifier, and autocomplete session identifier where applicable.
Notes: the plugin’s Pro6PP autocomplete flow is routed through this plugin’s WordPress AJAX endpoint and then through Postcode Checkout for the actual address lookup.
Postcode EU
Service URL: Postcode EU API
Privacy policy: Privacy Policy
Terms: Terms and Conditions
Purpose: retrieves the list of countries supported by the Postcode EU international autocomplete flow.
When requests are sent: when the plugin builds or refreshes the available country list for the Postcode EU integration.
Data sent: no customer address or personal data is intentionally sent; the request only retrieves supported-country metadata.
Pro6PP
Service URL: Pro6PP API
Privacy policy: Privacy Policy
Terms: Terms and Conditions
Purpose: retrieves supported country features for the Pro6PP international autocomplete flow.
When requests are sent: when the plugin builds or refreshes the available country list for the Pro6PP integration.
Data sent: no customer address or personal data is intentionally sent; the request only retrieves supported-country feature metadata.
