If someone leaves Bill Tomasi’s garage door open too long, the door opener sends him an e-mail. Recently, Tomasi’s new car also sent him a note: Time for an oil change. One hour later, the dealership e-mailed him a coupon for exactly that service. “It could be a coincidence, but I don’t think so,” says Tomasi, vice president of product management at International Business Systems (IBS), a global supply chain software and management services company with U.S. headquarters in Folsom, California.