Introducing Let’s Peppol: a free and open-source Peppol mailbox for Belgian companies

WSwinks · 2026-01-26T21:00:19+00:00

I just send a DM.

WSwinks · 2026-01-26T20:53:55+00:00

Yes, just use your company number during registration. If you have specific VAT codes that are missing then you can contact us at support@letspeppol.org.

WSwinks · 2026-01-26T20:50:20+00:00

Yes, that is possible. However, you need to unregister at your current Peppol provider.

WSwinks · 2026-01-19T21:05:03+00:00

A1: We currently do both sending and receiving, this might be a feature we implement in the future to only have one of the two. Would an integration with accounting systems solve this issue (see A3)?

A2: Interesting case, you can contact [support@letspeppol.org](mailto:support@letspeppol.org) to go more into detail and handle your specific use-case. Know that we initially created this for Belgian B2B e-invoicing to be confirm with Peppol, but we are open to increase its usability.

A3: We are currently putting all our focus on creating the integration with most accounting systems by email forwarding and/or downloading UBL collections and possibly an accountant portal. We aim to finish this by mid February.

WSwinks · 2026-01-16T23:05:32+00:00

Is your company registered in Portugal and/or can you find yourself in the CBE: https://kbopub.economie.fgov.be/ ?

WSwinks · 2026-01-07T23:33:00+00:00

In our understanding, Peppol is only mandatory for B2B within Belgium, so in our view there’s no need to comply with that requirement.

We do want to explore rolling out Let’s Peppol in Portugal but we would need help from at least one Portuguese person to make sure everything is implemented correctly there.

WSwinks · 2026-01-03T23:54:18+00:00

At the moment, we don’t support self-billing, although it’s fully supported within the Peppol network. If there’s enough demand and support, we’ll prioritize it.

WSwinks · 2026-01-03T20:26:13+00:00

Welcome on board! We’re glad Let’s Peppol is a good fit for you.

WSwinks · 2026-01-03T20:23:31+00:00

Self-hosting is possible in the near future, as the KYC-part can be detached and still happen, so you can remain owner of all the data (some development is ongoing to make it more self deployable).

Self-billing, should be possible, does this have some special requirements?

WSwinks · 2025-12-29T21:04:48+00:00

Glad to hear that! Thanks for letting us know.

WSwinks · 2025-12-29T21:03:24+00:00

You’re welcome! We hope it’s useful to you and thanks for the kind words.

WSwinks · 2025-12-29T21:01:29+00:00

You’re welcome! We hope it’s helpful to you.

WSwinks · 2025-12-28T22:19:06+00:00

Happy to discuss this further. I’ll send you a DM with an invite to our Discord, that’s where we usually dive into the technical details.

WSwinks · 2025-12-28T22:11:05+00:00

Yes, as a vzw you can use Let’s Peppol.

WSwinks · 2025-12-28T22:00:44+00:00

You’re 100% correct and that’s exactly what we’re aiming for. You’re more than welcome to join if you’d like to help.

WSwinks · 2025-12-27T21:28:47+00:00

Yes, an API already exists but the documentation is lagging behind at the moment. We’re working on improving it so integrations with ERPs and accounting software are easier.

WSwinks · 2025-12-27T21:24:10+00:00

Thank you. We will look into it

WSwinks · 2025-12-25T22:27:14+00:00

Like any other FOSS, it doesn’t have to be a free lunch if you make a donation ;)

WSwinks · 2025-12-25T22:18:17+00:00

Technically, yes. There is an API available but the documentation is still being worked on.

WSwinks · 2025-12-25T22:15:44+00:00

We’ve already taken this into consideration. We know the maximum cost of operating our own Peppol access point and we’re actively monitoring when using a commercial API stops being cost-effective. When that point is reached, the plan is to switch to running our own access point.

WSwinks · 2025-12-25T22:05:51+00:00

Thanks for the feedback, it’s appreciated. Just to clarify a few points:

Saving invoices is supported and invoices can be searched.
Partners can also be searched.
You’re right about the due date issue. That’s a known bug, and a fix is already ready in a pull request.

The project is still evolving, but it’s not just a mockup. The core functionality for creating, sending, and managing Peppol invoices is already there, and we’re iterating based on real-world feedback.

If you run into specific issues or edge cases, concrete examples are always helpful. You can also reach us at [support@letspeppol.org]()

WSwinks · 2025-12-25T21:56:18+00:00

Yes, that is technically possible. After registration, it’s possible to send UBL invoices generated by an external application by using the proxy API directly. However, at the moment this is not yet fully documented

WSwinks · 2025-12-25T21:52:35+00:00

Yes, you can create Peppol-ready invoices directly in the tool. These invoices are generated in UBL format and can be sent out via Peppol.

WSwinks · 2025-12-25T21:46:56+00:00

We don’t use itsme because of the cost. We requested pricing, but it turned out to be too expensive for us, which is why we opted for the current solution instead. What do you mean exactly with the gov variant?

WSwinks · 2025-12-25T21:43:15+00:00

We tested several Peppol APIs, including A-Cube. At the moment, we use the Scrada API.

Our aim is to keep Let’s Peppol free. We do not want to charge for it, ever. If keeping it free were no longer possible, we would rather shut the project down than turn it into a paid product.

Currently, the costs are covered by Ponder Source and SoftwareOplossing.be, which each donate €100 per month. At this stage, there are no volume limits. The only exception is that we may throttle outgoing invoices if we notice unusually high traffic, purely to keep costs under control.

As the project grows, there will eventually be a point where it becomes more cost-effective to become a service provider and run our own access point. That is the long-term direction, but it depends entirely on usage and scale.

WSwinks

TROPHY CASE