@Emilie maron  I’ve never worked with Sellsy but a quick search does show a few different integration options using tools like Zapier and other automation tools, what are you looking to integrate specifically just add some transactions to the Intercom events or something else more involved?

 

Feel free to book a time on my calendar if I can be of help to you in reviewing your options, from what I see with Sellsy, it does have what’s needed with 3rd party integrations and webhooks to be able to connect it with Intercom if needed, this is something I can help with if you don’t find a viable solution out of the box. 

Hope this helps!