POP – Free European electronic invoicing for e-commerce (ex-WooPop)

POP is the complete e-invoicing plugin for WooCommerce, Paid Memberships Pro and Cozmos PMS, designed for full compliance with European electronic invoicing standards. It supports structured XML invoice generation, automated delivery and certified archiving, giving your e-commerce a seamless and reliable invoicing workflow. POP currently supports Italy, San Marino, Spain and Belgium, and it is built to align with national and EU e-invoicing requirements as they evolve across Europe. POP automates the entire process: electronic invoice generation, XML file creation, submission to national or international interchange systems, and long-term digital preservation of fiscal documents. It supports XML e-invoices, PDF e-invoices, credit notes and fiscal receipts, ensuring alignment with EU e-invoicing and structured invoicing practices. With the latest update, POP includes direct delivery to the Italian Exchange System (SdI) and full support for Belgian structured e-invoicing, where B2B e-invoicing becomes mandatory for VAT-registered businesses starting January 1st, 2026.

International PEPPOL Support (NL, FR, DE, UK)

POP enables sending structured XML e-invoices to customers in the Netherlands, France, Germany and the United Kingdom through the PEPPOL International network, using a certified Access Point.

Unlike Belgium, these countries do not require mandatory B2B e-invoicing, but many businesses still request PEPPOL delivery for interoperability or internal compliance. POP provides the technical capability to route invoices internationally. Regulatory requirements may vary by jurisdiction, and users should verify their own obligations.

POP is also available for Shopify: apps.shopify.com/pop-european-invoicing

¿Qué puede hacer POP por ti?

POP is available in four plans (Free, Growth, Pro and Enterprise). For paid features, visit: https://popapi.io/en/prices/. Below are the features included in the Free plan.

Document Generation & Delivery

• Automatic generation of XML electronic invoices and PDFs for all completed orders
• Hasta 20 documentos fiscales por mes incluidos en el plan gratuito
• Descarga manual de facturas en formato PDF o XML
• Local storage of XML files
• Customizable PDF templates with logo and footer text
• Fully compatible with EU e-invoicing workflows

Gestión fiscal

• Support for customers in the European Union and worldwide
• Configuración de regímenes fiscales y tratamientos de IVA
• Referencias normativas para transacciones exentas

Verificación y control de datos

• Automated validation of VAT number and Tax Code via the European VIES system
• Customizable invoicing fields: VAT number, Tax Code, Destination Code and more

Numeración y configuración de documentos

• Fully customizable invoice numbering (prefix, suffix, yearly reset)
• Progressive numbering for invoices, credit notes and receipts
• Automatic blocking of invoices with a zero total
• Exclusion of zero-value line items from invoices

Gestión e informes

• Filters for invoices by date, type and WooCommerce order status
• Search by invoice number or order ID
• Full integration with WooCommerce e-invoicing
• No installation limits or restrictions with other CMS or management systems

API de POP e integraciones externas

POP includes all integrations previously offered as paid add-ons – such as automatic interchange system submission, qualified electronic signature and certified digital preservation – now built directly into the plugin depending on your selected plan. Thanks to these built-in capabilities, POP works as a complete invoice generation plugin, automating XML creation, signing, transmission and long-term preservation through a fully structured, compliant e-invoicing workflow.

Opciones de factura

With POP you can customize your invoicing workflow by configuring:

• Prefijo y sufijo de la factura
• Numeración progresiva automática
• Custom fields (Tax Code, Destination Code and more)
• Automatic sending of PDF invoices via email
• HTML invoice display

Métodos de pago admitidos

• Efectivo
• Transferencia bancaria
• Cheque
• Tarjetas de pago
• Débito directo SEPA

Compatibilidad

POP is compatible with the latest versions of WordPress and WooCommerce: * WooCommerce: up to version 9.x.x (HPOS-compatible) * PHP: 5.6 or higher * WordPress: 4.6 or higher

We recommend using WordPress 6.x.x and WooCommerce 9.x.x for optimal performance. We understand how frustrating it can be to navigate complex tax regulations, cumbersome tools, and the fear of making costly mistakes. We’ve been there too. It is precisely from these daily challenges that POP was born: a practical solution to real problems. We didn’t want just another software. We wanted a simple, immediate, and truly useful solution. A way to automate tax management, reduce time wastage, and make room for the growth of your business, without the burden of bureaucracy. POP is born from direct experience. It is designed to be clear, reliable, and perfectly integrated into your daily workflow. We can’t make compliance sexy, only easier.

Contribuciones

«POP – Facturación electrónica europea para e-commerce (ex-WooPop)» es un software de código abierto. ¡Contribuye a su desarrollo para mejorar continuamente el plugin!

Preguntas Frecuentes

¿Es el plugin POP gratuito?

Sí, POP ofrece una versión gratuita que incluye 20 créditos API por mes. Un crédito API permite generar un documento fiscal. Para disponer de más créditos y acceder a funcionalidades avanzadas, es necesario activar un plan de pago.

¿Puedo enviar automáticamente las facturas a las autoridades fiscales?

Yes, with the Growth plan you can integrate POP with the italian tax authorities system, automating the sending of electronic invoices directly from your e-commerce.

¿Es posible personalizar las facturas generadas con POP?

¡Por supuesto! Puedes personalizar la plantilla PDF de la factura añadiendo el logotipo de tu empresa y un texto personalizado en el pie de página. Además, es posible configurar el prefijo, sufijo y la numeración progresiva de la factura.

¿Admite POP la facturación a clientes extranjeros?

Sí, POP está diseñado para apoyar la gestión fiscal tanto de los clientes en España como de las ventas en la UE y fuera de la UE, cumpliendo con la normativa vigente.

¿Es posible generar abonos con POP?

Sí, a partir del plan «Growth», puedes generar y gestionar abonos en formato XML o PDF directamente desde el plugin.

¿Ofrece el plugin soporte al cliente?

Sí. Para solicitudes de soporte, puedes contactarnos directamente a través del enlace de soporte en el plugin o abrir un tique en nuestro sitio web oficial.

Requisitos

PHP: >= 5.6 WordPress: >= 4.6