Connect Plug&Pay with Billit and automatically forward sales invoices via Peppol. Quick to install, VAT configuration included. Try for free.
1. How this app works
What does the integration do?
Automatically syncs orders from Plug&Pay as invoices to Billit
Sends invoices via Billit (including via the Peppol network)
Automatically creates new debtors in Billit based on customer data
Recognises existing debtors by email address and links orders to the correct contact
Books orders to a default debtor in Billit if desired
Uses order numbers or invoice numbers from Plug&Pay as a reference in Billit
Groups order lines by VAT code and general ledger account
Exports existing invoices to Billit from a start date of your choice
Registers payments in Plug&Pay once the invoice has been paid in Billit
What does the integration not do?
Does not sync purchase invoices or documents from Billit back to Plug&Pay
Does not send invoices that are part of the initial export (only new invoices are sent via Billit)
Does not manage subscriptions or recurring invoices in Billit
2. Connect to Plug&Pay
To connect Plug&Pay, you need an API key from your Plug&Pay account. Below we explain how to create and enter it.
Create an API key in Plug&Pay
Log in to your Plug&Pay account.
Click "Add new API key".
Give the key a recognizable name (e.g. Combidesk) and save.
Copy the generated API key — you will need it right away.
Don't have a Plug&Pay account yet? Click "Create Plug&Pay account" in the connection window to register for free.
Enter the API key via Combidesk
Go to your Combidesk dashboard and open the Plug&Pay connection.
Paste the copied API key into the input field.
Click "Save".
Done! Your Plug&Pay account is now connected.
3. Connect to Billit
Click the button “Connect your Billit account”.
Then authorize by entering your Billit login credentials (email address and password). Click “Connect with Combidesk”.
Select the companies you want to connect. Tick the relevant ones and click “Approve”. You will be redirected back to the integration.
4. Configuration of the integration
For the integration to work properly, it must be configured correctly. In the paragraph below, we'll go through all the steps of the integration in sequence. Before starting the installation, we recommend that you first carefully read through these steps.
Configure these Plug&Pay steps:
Group orderlines
Should orderlines be grouped by VAT code and ledger account. Beware: If you choose YES, the description on the orderline won't be used.Export existing invoices
If you want to export existing invoices, choose the start date here.Transfer order numbers or invoice numbers
You can choose to transfer order numbers or invoice numbers to Billit.
Configure these Billit steps:
Disable check on email address?
Should we disable the check if a customer exists by email address?Default debtor
If you want to book your orders on a default debtor, enter the number of that default debtor hereHow do you want the invoices to be sent?
Indicate if and how you want the invoices to be sent by Billit.
Note! We only do the actual sending for invoices that are not part of the initial export of invoices.
5. The Combidesk customer dashboard
How does the dashboard work?
If you've created a new Combidesk account or installed a integration, you'll receive an email with access to your Combidesk account. When you log in to combidesk.com, you'll arrive at the dashboard. This is where your integration is located. From here, you can easily adjust your integration and account settings, view the integration logs (history), and access support.
What can you view via your Combidesk account?
From your Combidesk dashboard you also have access to your account settings, connected accounts, billing and support.
6. What can you expect from Combidesk?
We understand you're busy or perhaps have little software experience. That's why our specialized team is always ready to help. Take advantage of our installation packages to save yourself even more time.
Installation appointment
If you're short on time or would like us to handle the entire installation, take advantage of our remote implementation support. We'll take care of everything for you right away and deliver a fully functional connection. For most connections, installation support costs a fixed fee of €150, while others cost €300. If you decide not to continue with the connection after the trial period, there's no charge. Schedule an installation appointment below and schedule it right away.
Explanation of service level (SLA) subscriptions (Basic, Pro, Premium)
To help you use our integration effectively, we offer three service levels: basic, pro, and premium. You can always change the service level in your integration. The price will be adjusted for the next billing period.



