There are two of ways to tell us what CRM integration you want to see.
First (and quickest) way is to submit your CRM or vote for existing one in Leadfeeder's idea portal. Your name or email won't be shown anyone on the public side of the portal after submitting/voting
Second way is to log in to Leadfeeder and in Website settings under Company details you can register what CRM you use. Takes 30 seconds to do this.