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Documentation Index

Fetch the complete documentation index at: https://invopop-kill-invoicexpress.mintlify.app/llms.txt

Use this file to discover all available pages before exploring further.

Explore our guides to learn how to use Invopop effectively. Whether you’re setting up your first workflow, achieving compliance in a specific country, or integrating with third-party services, these guides provide step-by-step instructions and best practices. Getting started

How to go live

Ready to issue real invoices? Follow these steps to move from sandbox to production.
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GOBL Guide

A guide to the GOBL format and how to use it.
Recent regulation enforcements
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Peppol

Belgium’s B2B enforcement came into effect on January 1st, 2026.
Upcoming mandates
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VERI*FACTU Invocing Guide

Spain’s B2B enforcement comes January 2027. Get prepared today.
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AT Portugal

Portugal’s B2B enforcement comes January 2026. Get prepared today.
Integrations
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Stripe

Sync invoices with Stripe payments.
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ChargeBee

Connect invoices to ChargeBee subscriptions.