The best system I have found to stay in contact with clients & gateopeners is to stay active at their events. Yes I did say their events. When I attend events that the community holds, or make myself available for all incoming events of previous or future clients, connections stay valid and organic. This allows for relationships to grow; thus making referrals come easier. I also use our customer portal, which allows me to check on clients experiences with me. Blind spots in this erode because I am able to check in on clients on both ends. Creates an experience for my clients that helps them understand i am there for them.