Turn your WooCommerce orders into compliant electronic invoices: generate XML and PDF for free, then send them to SdI (Italy), PEPPOL (Belgium and the EU), KSeF (Poland) or ZUGFeRD (Germany).
POP collects the fiscal data at checkout, generates the invoice from each order, handles numbering, VAT treatment and credit notes, and transmits the structured XML to the official network, all from one WordPress workflow, with free and paid plans.
Get started without an account
Install the plugin and start generating compliant XML and PDF invoices right away, at no cost, with no account and no setup step required. A free monthly generation allowance is included out of the box.
When you’re ready to send documents through a supported network like SdI, PEPPOL or KSeF, or connect a provider such as Fatture in Cloud, Aruba, Zoho or PEC, a short setup wizard built directly into the plugin guides you through connecting your free POP account, right inside your WordPress admin.
Every plan, including Free, can use every supported network and integration. Your plan sets your monthly credit allowance, not which features you can use.
After you install
- Generate XML and PDF invoices from your orders straight away, without an account, within the free monthly allowance.
- When you want to send to a network, a 4-step wizard connects a free POP account: email, one-time code, company details, pick a channel.
- Your first invoice reaches SdI (or PEPPOL / KSeF) from the same screen.
Who POP is built for
- Italian WooCommerce stores that need every order to become an SdI invoice automatically
- Sole traders and flat-rate (“forfettario”) businesses covered by Italy’s 2024 e-invoicing obligation
- Stores selling B2B cross-border that need VAT treatment, reverse charge and PEPPOL handled
- Agencies and developers running invoicing for multiple WooCommerce stores
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 workflow, on any plan including Free
- 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
Supported countries and workflows
POP works at two levels depending on the country, endpoint and configured integration, on any plan including Free.
Full compliance solution:
- Italy and San Marino: structured XML invoice generation, SdI transmission, and electronic signature or compliant archiving where enabled by the selected workflow
- Belgium: structured B2B e-invoicing and PEPPOL transmission (mandatory for domestic B2B between VAT-registered businesses since January 1st, 2026)
Format generation and network submission where your endpoint supports it:
- Germany: ZUGFeRD / Factur-X and PEPPOL documents
- France, Netherlands, United Kingdom: PEPPOL-based workflows
- Poland: KSeF structured XML transmission
Regulatory obligations, timelines and accepted channels vary by jurisdiction, business type and transaction type; users remain responsible for verifying the requirements that apply to their specific case. Coverage is expanding; more markets are on the roadmap.
For developers
POP also exposes a REST API, WP-CLI commands (wp popapi invoice search|get|xml|pdf) and an MCP endpoint for AI-assisted and scripted invoicing, plus WordPress Abilities for automation-aware workflows. The API powers the plugin itself; most stores never need to touch it.
Supported document formats
- Structured XML e-invoices, including UBL where applicable
- PDF invoice copies as human-readable representations
- XML and PDF credit notes, where supported by the selected workflow, on any plan including Free
- Fiscal receipts, where supported by the configured workflow
- ZUGFeRD document bundles for supported German workflows
API credits and plans
POP is available in five plans: Free, Basic, Growth, Pro and Enterprise. The Free plan includes 10 API credits per month.
Every plan, including Free, can use every supported network and integration: SdI, PEPPOL, KSeF, ZUGFeRD, Zoho, Aruba, Fatture in Cloud and PEC are all available regardless of plan. Your plan sets your monthly credit allowance and overquota rate, not which features you can use.
A credit is the unit used to measure credit-consuming API operations, such as generating or validating XML, submitting a document to a supported network, applying an electronic signature or activating compliant archiving when enabled. Credit consumption depends on the operation performed, country and workflow.
For paid features, visit: https://popapi.io/pricing/.
Supported payment methods
- Cash
- Bank Transfer
- Check
- Payment Cards
- SEPA Direct Debit
Compatibility
POP is compatible with the latest versions of WordPress and WooCommerce:
- WooCommerce: 9.x.x or higher, with HPOS support
- PHP: 7.4 or higher
- WordPress: 4.6 or higher
For HPOS and optimal performance, we recommend using WordPress 6.x.x and WooCommerce 9.x.x and up.
Why POP
E-commerce invoicing is becoming more structured, more local and more connected to national systems. A WooCommerce store may need to collect the right fiscal data at checkout, generate XML invoices, submit documents through SdI, PEPPOL or KSeF, manage credit notes and keep invoice files available for accounting or customer support.
POP was created to make European e-invoicing easier for e-commerce teams: less manual work, fewer disconnected tools and a clearer path from order data to structured invoice documents.
We can’t make compliance sexy, only easier.
Contributions
“POP – e-invoicing for WooCommerce (ex-WooPop)” is open source software.
Contribute to its development to continuously improve the plugin!
Requirements
PHP: >= 7.4
WordPress: >= 4.6
Screenshots
Invoice list - filter and manage every invoice, credit note and receipt by type, status, sent/not-sent, provider and date, with bulk download of XML and CSV.
General settings - connect your POP account, switch between Sandbox and Live environment, and manage your company's fiscal data in one place.
Integrations - all supported channels in one catalog: SdI, PEPPOL, KSeF, Fatture in Cloud, Aruba and more, activated per site.
Integrations (continued) - official SdI, PEPPOL, KSeF and Zoho channels alongside Fatture in Cloud and Aruba Business, each with one-click activation.
Connection wizard, step 1 - start with just an email. Documents can already be generated locally without a POP account; connecting is only needed to send them through a delivery channel.
Connection wizard, step 2 - verify your email with a one-time code.
Connection wizard, step 3 - enter your company details: country, VAT number and contact emails.
Connection wizard, step 4 - choose which delivery channel to activate now (e.g. SdI); you can always add more later from Integrations.
Connection wizard, step 4 (expanded) - fine-tune the channel with optional digital signature and legal storage, then accept the terms to finish.
Connection wizard, done - your POP account is connected and ready to send invoices.
Document numbering - configure invoice, receipt and credit note numbering: digit count, yearly reset and suffix format.
Advanced settings - set up Reverse Charge with VIES validation and per-case tax treatment codes for EU customers.