Step 1: First create a Billit account, if you don't have one yet. As a new Billit user, you can try Billit free of charge for the first 15 days. After that, you can choose a licence tailored to your business. Bookingplanner all-in-one is also free for 14 days. Their pricing is based on the number of rooms. You can find the overview on the Bookingplanner website.
Step 2: Also create a Bookingplanner account and log in. In Bookingplanner, now go to Integrations > Accounting software. Next to Billit, click the 'Activate' button.
Step 3: After activation, you will see the following message: "Some settings are mandatory, please check on the settings page". Click the Settings button here to enter your Billit e-mail address.
Step 4: Now open Billit and click Quick entry at the top left. Copy the e-mail address under Split files.
Step 5: Now add this e-mail address to the Billit Settings in Bookingplanner. Make sure you enable the option at the bottom. This way, a new invoice is automatically sent to Billit when you create it. Don't forget to save the page.