POP

Complete European e-invoicing system for WordPress and WooCommerce: generate XML and PDF invoices, collect fiscal data, and connect your store to PEPPOL, KSeF, SdI and ZUGFeRD workflows.

POP helps European e-commerce teams automate invoice generation, fiscal checkout fields, document downloads, credit notes and supported network submissions from one WordPress workflow. A complete e-invoicing plugin for WordPress and WooCommerce, available with free and paid plans.

Who POP is built for

• Freelancers and small businesses that need reliable XML and PDF invoices without manual document handling
• Growing e-commerce owners selling across European markets with different fiscal data requirements
• Accountants, agencies and developers managing invoicing workflows for multiple WordPress stores
• Enterprise stores that need predictable API credit usage and a structured path toward country-specific e-invoicing workflows

Core features

• Automatic electronic invoice generation in XML format for completed orders
• Branded PDF invoice generation with custom logo and footer text
• Manual PDF and XML download from the order and document management screens
• Credit note generation in XML and PDF format, where supported by the selected plan and workflow
• Fiscal receipt support, where supported by the configured country and integration
• Custom invoice numbering with prefix, suffix, digit length and yearly reset
• Progressive numbering for invoices, credit notes and receipts
• Checkout fields for VAT number, tax ID, destination code, PEPPOL ID and other workflow-specific fiscal data
• VAT number and tax ID validation at checkout, where supported
• Tax regime, VAT treatment, exemption and reverse-charge configuration
• Automatic blocking of zero-total invoices
• Option to exclude zero-value line items from invoices
• Invoice search and filters by date, type, order status, invoice number and order ID
• Automatic PDF invoice email delivery
• HTML invoice display for customer-facing workflows
• HPOS-ready WooCommerce invoice and document management
• No limit on the number of WordPress installations and supported integrations

Supported transmission networks

• PEPPOL for supported European B2B interoperability workflows, where enabled
• KSeF for structured Polish e-invoicing workflows, where enabled
• SdI for direct transmission of structured XML invoices, where enabled
• ZUGFeRD / Factur-X for supported German hybrid PDF/XML document workflows, where enabled

POP supports B2B e-invoicing use cases. B2G use cases are not currently supported.

Integrations

POP connects WordPress invoicing workflows with supported e-commerce platforms, membership systems, automation tools, national networks and document providers.

• WooCommerce / WooCommerce Subscriptions / WooCommerce HPOS
• Paid Memberships Pro / Paid Member Subscriptions by Cozmoslabs
• Zoho / Aruba / Fatture in Cloud / PEC [Interchange System]
• Make / Zapier / Webhook automations
• n8n
• POP API, integrations and direct network connectors

POP supports WooCommerce, WooCommerce Subscriptions, Paid Memberships Pro and other WordPress invoicing workflows. It is also available for Shopify: https://apps.shopify.com/pop-european-invoicing

AI and LLM features

• MCP-ready: connect compatible AI assistants to POP invoicing capabilities
• Exposes WordPress Abilities for automation-aware WordPress workflows
• WP-CLI commands (wp popapi invoice search|get|xml|pdf) for agentic operations, scripted checks and developer automation
• API-first design for AI-assisted invoice creation, status checks and document routing

Supported countries and workflows

Read the full description on the official page →