Keep your tools. We send invoices wherever you want.
Already using a retrieval platform? Perfect. Just give your client the email address and you're done.
Configure the import email address of your accounting software (Horus, WinAuditor, WinBooks, Exact Online, Sage BOB, Yuki, ClearFacts...). We automatically send in UBL XML or PDF.
Access the accountant space to view all your clients, download their sales and purchase invoices, filter by period and bulk export. Free and no installation required.
Total automation. Our desktop app (Windows/Mac) syncs invoices directly to your software folders. You set the frequency.
Your clients don't need to change anything, neither do you.
With the 2026 Peppol mandate, your clients are looking for reliable solutions. We offer software designed for them, with support included.
Your clients have a question? They call us directly. No ticket, no waiting, no extra charge. Support is included in their license. Your clients contact us directly in Belgium.
• Flexina Invoicing – Complete business management (quotes, orders, invoices, electronic signature, reminders, bank reconciliation, CRM, planning...)
• Peppol-Box – Simple and effective solution for freelancers and merchants who want to send and receive Peppol electronic invoices
• Peppol-Box Integration – For companies with an existing ERP or software: API, XML sending, PDF to XML conversion
Peppol-Box from €5/month. Peppol-Box Integration from €10/month. Flexina from €20/month. Fixed prices that don't change, including support, maintenance and updates.
20 years of invoicing experience, Peppol in place for 4 years for B2G in Belgium and Luxembourg, UBL XML export for 5 years. We master electronic invoicing.
Depuis 2008, Flexina accompagne des milliers d'entreprises belges dans leur gestion commerciale. Notre expérience et notre connaissance du marché nous permettent de proposer des solutions vraiment adaptées. Gratuit pour votre cabinet, abordable pour vos clients.
Manage your invoicing wherever you are
For over 15 years, we have been offering quality professional service in about ten countries
SECURITY, NETWORK & ELECTRICAL
"Always loyal to FLEXINA, a real pleasure and a very efficient tool on a daily basis. We had tried many different invoicing software and none of them offered such flexibility in settings and customizations. A must have for all freelancers and companies who want an all-in-one tool without any hassle."
LED Technology
"I have been using Flexina for 13 years, it's an excellent invoicing software that is complete (quotes, purchase orders, delivery notes, invoices...). It is easy to use, with its app and Cloud, it allows access to documents from anywhere and with any device."
Printing
"I find that Flexina is a company that fights hard to satisfy us, with an excellent team behind it, available, attentive, and especially responsive! I use Flexina every day, even on weekends, and it works perfectly! 100% recommended."
Services
"Since I started using Flexina, my life has changed. Everything is easier, they update very regularly. They are really super responsive! Thank you"
Restaurant
"I was looking for an online program, I found flexina which solved all my problems, simple and fast and support always available, I highly recommend it in Switzerland."
Locksmith
"We have been using Flexina to create our invoices and quotes for several years now, it's a really complete and easy to use invoicing software. We are very satisfied with the service and human contact with Flexina team members."
Optics
"I have been using Flexina since 2016, the software is super simple and very practical. Best wishes to the whole team."
Decoration
"We have been using Flexina for years. Very easy to use and handle. We recommend it."
Environment
"Flexina, top software adapted to SMEs on computer as well as smartphone. Simple software meets business needs"
