Hi @sebastiaanvaz, thank you for your question. FluentCRM offer an integration option using webhook (https://fluentcrm.com/docs/webhook-integration) and our Pro version allows you to enable Webhook (https://www.cartbounty.com/webhook-make-integromat-pabbly-abandoned-cart-recovery-automation/) which will allow you to send abandoned cart data over to FluentCRM.
Let me know if you have any additional questions.