I have big number of clients and their paydate is differ, almost every day I must check my list to know closest dates. I wonder if there any automatic tool which will notify me and send automatic emails to my clients? As I know such tools are known as autoresponders, right? Quick goolesearch gave me lots of names and I need one and the best. I've also found Tickletrain.com services, they are cheap. What can you recommend folks?