POP – e-invoicing for WooCommerce: SdI, PEPPOL, KSeF (ex-WooPop)
Turn WooCommerce orders into compliant e-invoices: XML/PDF free, delivery to SdI, PEPPOL, KSeF, ZUGFeRD.
4.9
(15 ratings)Will this break my store?
What the WordPress.org registry says about keeping POP – e-invoicing for WooCommerce: SdI, PEPPOL, KSeF (ex-WooPop) running.
Tested to 7.1
Tested against the WordPress branch in use today.2 days ago
At least 14.9 releases a year since launch. WordPress.org only lists versions still available for download, so the real number may be higher.7.4
Your host must be running at least this version.4.6
4
Maintenance & trust
Scored on how POP – e-invoicing for WooCommerce: SdI, PEPPOL, KSeF (ex-WooPop) is looked after — not on how many stores run it.
97
out of 100Maintenance
35 / 35WordPress compatibility
20 / 20Support responsiveness
Not enough dataMerchant satisfaction
13 / 15Listing transparency
10 / 10Ratings
4.9
15 ratingsTurn 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
No. You can install the plugin and start generating XML and PDF invoices right away, with no account and no setup step, within a free monthly generation allowance.
Creating a free POP account is only needed when you want 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 into the plugin guides you through it, right inside your WordPress admin.
Yes. POP offers a Free plan that includes 10 API credits per month, and every supported network and integration is available on it: the Free plan is not limited to a smaller feature set.
A credit is the unit used to measure credit-consuming API operations. Some plugin features are included without credit consumption, while operations such as XML generation, transmission, electronic signature or archiving may consume credits depending on the configured workflow.
To unlock more credits, you can activate a paid plan.
POP is an e-invoicing compliance product. A single invoice may involve multiple compliance actions, such as:
- Generating and validating XML
- Submitting XML to a supported network such as SdI, PEPPOL or KSeF
- Applying an electronic signature, if enabled
- Activating compliant archiving, if enabled
Each credit-consuming operation uses API credits according to your monthly allowance and configured workflow.
Yes, on any plan including Free. POP can integrate with supported networks such as SdI, PEPPOL and KSeF, automating the transmission of structured XML invoices directly from your e-commerce workflow.
Available networks depend on the country, endpoint and configured integration. Your plan determines your monthly credit allowance, not which networks you can use.
Yes. You can customize the PDF invoice template by adding your company logo and custom footer text.
You can also configure invoice prefix, suffix and progressive numbering.
Yes. POP supports EU and international customers and can route structured XML through supported networks.
Regulatory requirements may vary by jurisdiction, transaction type and business case. Users should verify the specific obligations that apply to them.
Yes, on any plan including Free. POP supports credit note generation where enabled by the country and workflow.
This answer applies to the WordPress open source version of POP.
- Free plan: the service stops when credits are exhausted.
- Paid plans: overquota is allowed. Extra API operations are charged according to your plan’s overquota rate.
You can upgrade your plan at any time to increase your monthly credit quota.
Please note that credit enforcement rules may differ on non-open-source platforms.
Yes. POP can be used for XML invoice generation and validation without network submission, and without creating an account, within a free monthly generation allowance.
Network submission, digital signature and compliant archiving are optional capabilities depending on your workflow and country configuration, and are available on every plan including Free.
Yes. For support requests, you can contact us directly through the support link in the plugin or open a ticket from our official website.
Yes. When you activate the plugin, it sends your site’s URL to POP’s servers (the same servers the plugin already connects to for e-invoicing) so we know the installation completed successfully. This happens once, automatically, and never repeats. No fiscal, personal, or business data is included.
Plugin details
Tags on WordPress.org