WordPress & WooCommerce

SendPol for WooCommerce is a WordPress plugin that automatically integrates your WooCommerce store with the Peppol network. It transforms your order processing by automatically converting completed orders into UBL (Universal Business Language) invoices and sending them via Peppol without manual intervention.

Key Features

• Complete WooCommerce integration: Automatically recognize and convert orders to invoices
• UBL (Universal Business Language) invoices: Compatible with governments and business customers
• Automatic sending via Peppol: Standardized & legally valid
• B2B ready: Perfect for businesses selling to other companies or government entities
• EU compliance: Ready for Peppol e-invoicing requirements (mandatory from 2026 in many EU countries)

Why Choose SendPol?

From 2026, Peppol e-invoicing will become mandatory in more and more European countries, especially for businesses and government contracts. With SendPol, you're ready for compliance without complex setups or high development costs.

SendPol fully supports both full and partial refunds via credit notes.

• Full and partial refunds both generate credit notes automatically.
• Credit notes are sent to the Peppol network just like invoices.
• Manual credit note sending is available via the order action menu ("SendPol: Send credit note").
• Per-refund tracking: each refund is tracked separately.
• Cancelled order credit notes can be automated (see the "Automatic credit note on cancellation" setting).

When an invoice fails to send, the plugin schedules automatic retries.

• The retry system uses exponential backoff (retries at increasing intervals).
• Maximum retry attempts are enforced.
• Retry status is visible per order in the SendPol order metabox.
• Old retry records are cleaned up automatically.
• Manual retry is always available from the order page.

• In the Recent Documents tab you can filter by status, document type, document number, and date range.
• Per document: document number, type (invoice / credit note), customer name, total amount, created date, and a status badge.
• Actions per document: Send to SendPol, Send via Peppol, Retry and Reset — plus Upgrade plan / Complete KYC when a document is blocked.
• Download UBL/XML button per document.

From the order metabox, the "Debug payload" button shows the full JSON payload that would be sent to the SendPol API. Useful for troubleshooting invoice content issues.

The plugin fully supports WooCommerce High-Performance Order Storage (HPOS). All features (order column, metabox, bulk actions) work with HPOS enabled.

• sendpol_wc_api_base_url — override the API base URL programmatically.
• sendpol_wc_external_invoice — provide a custom external UBL invoice for an order (return a UBL XML string, or null to let SendPol generate one).
• sendpol_wc_auto_refresh_order_status — disable auto-refresh of order status in the order edit metabox.
• sendpol_wc_show_api_base_url — hide the API base URL field in settings (e.g. for managed installs).

// Override the API base URL programmatically
add_filter('sendpol_wc_api_base_url', function ($url) {
    return 'https://staging.api.sendpol.com';
});

// Provide a custom external UBL invoice for an order
add_filter('sendpol_wc_external_invoice', function ($invoice, $order) {
    // Return a UBL XML string, or null to let SendPol generate one
    return null;
}, 10, 2);

// Disable auto-refresh of order status in the order edit metabox
add_filter('sendpol_wc_auto_refresh_order_status', '__return_false');

// Hide the API base URL field in settings (e.g. for managed installs)
add_filter('sendpol_wc_show_api_base_url', '__return_false');