Fetchify vs PostNL Address Validation API
Fetchify
fetchify.comPostNL Address Validation API
developer.postnl.nlSide by side
| Figure | Fetchify | PostNL Address Validation API |
|---|---|---|
| Price from | £25/mo | Free |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 2 | 2 |
| Spec score · Address Verification Software | 8.1 (#10) | 7.6 (#22) |
| Headquarters | London, England, United Kingdom | The Hague, Netherlands |
| Integrations | Listed integrations include Shopify Plus, WooCommerce, Magento, Microsoft Dynamics 365, NetSuite, Salesforce, Xero, Sage 200, and Zapier. | PostNL lists plugins for Magento, WooCommerce, ShopWare, and Opencart for Dutch address validation. |
| Security and privacy | Fetchify's privacy policy says personal data may be stored in the UK, Europe, the United States, or other countries where its group or service providers operate, and describes technical, physical, electronic, and managerial safeguards. | PostNL's 2025 annual report says its privacy policy outlines principles for personal-data use and its cyber security framework is aligned with ISO/IEC 27001/27002 and the NIST Cybersecurity Framework. |
| Support | Fetchify lists weekday support from 9am to 5:30pm London time and 24/7 emergency support out of hours. | PostNL invites prospective customers to request a demo or contact its data solutions team for help. |
Plans
PostNL Address Validation API
- Address check for Benelux addressesFree
- International address validation€0.02, paid once
In their own words
PostNL Address Validation API
PostNL Address Validation API checks address data entered in a webshop or CRM for Netherlands and international destinations. As customers type a few letters or numbers, it can suggest matching addresses. Documentation describes coverage across more than 250 countries, regions, and island groups. Responses may include a locally formatted address, component fields, mailability and similarity scores, and latitude and longitude. The service supports correction, standardization, and autocomplete. Its international v3 endpoint uses POST and requires an API key with application/json content. CountryIso is mandatory; city, postal code, street, and house number are recommended inputs. PostNL lists plugins for Magento, WooCommerce, ShopWare, and Opencart for Dutch validation. The Benelux plan is free for PostNL parcel-contract customers and requires that contract. International validation starts at €0.02, paid once per API call, with bundle pricing varying by address volume. Returning multiple addresses in one response is temporarily unavailable. PostNL offers demos and data-solutions support.