How can I make sure my customers always fill in their correct address in the checkout? – Sendcloud Help Center

Purpose: In this article we list some 3rd party plugins and applications that you can use to ensure that your customers always enter the correct address details at checkout.

Please note: This article only intends to inform users on what address validation is, currently we do not offer this service.

How do you validate an address?

Address validation can be completed by two means:

Validate addresses by using a third-party service such as a webshop plugin or application
Validate addresses by using an API

In order to see which works best for you, please do independent research, this article can only provide general recommendations unspecific to your country and shop system.

Benefits

Increased conversion, because the customer's address is automatically filled in when, for example, your customer has entered his postcode and house number.
Higher customer satisfaction, because your customer cannot make mistakes. This way you ensure that your package is always delivered to the right address.
Cost-saving: the chance that your package cannot be delivered has been reduced, so you have fewer returns or surcharges.

Please note: Address validation is different from address verification, zip code, and postcode validation.

Plugins and applications

Please conduct your own research to determine what plugin will work the best for your shop system and country. Address validation software is often country-specific.

Austria

Postcode Check Implementation

Belgium

Postcode Check Implementation

France

Egon

Germany

Postcode Check Implementation

Luxemburg

Postcode Check Implementation

Netherlands

Spain

ELEX Address Validation & Google Address Autocomplete Plugin for WooCommerce

Switzerland

Postcode Check Implementation

Implementing an API

Please conduct your own research on what Address validation API you should use. These API's work by checking to see if an address is contained in an official address database. If the address that is being checked is found to exist in the official database, then that address is "valid".

Please note: using an API may take significant developer input in comparison to a plugin. Also, check if your carrier offers an API for address validation, often these APIs are free to use.

Smartstreet.com API offers international address validation with over 40+ countries and territories available.
The Postcode.nl API allows you to validate and correct when the addresses enter the system or do it afterward. Available in The Netherlands, Belgium, Germany, Luxembourg, Austria and Switzerland.
UPS Address Validation Application Programming Interface (API) can provide direct automated integration between your website or enterprise system and UPS. This API is available for use in over 40 countries
DPD Validate addresses using the DPD API documentation. See 2.8.1 Validate Address Request (ValidateAddressRequest)
Post NL offers Adrescheck Internationaal API to check international address data that is entered in your webshop or CRM. This API is only applicable for Dutch addresses.