CoachUp is a platform that helps coaches and athletes communicate with each other more efficiently by using Twilio-powered text messaging, allowing users to be assigned unique numbers instead of revealing their real phone numbers. The company found a creative solution to handle the issue when popular coaches receive too many messages from athletes, which could exhaust their allocated number pool cap, by "recycling" or reassigning inactive conversation numbers after three months. This feature has seen significant uptake since its launch and has contributed to CoachUp's growth, attracting notable investors like Stephen Curry, who is now a part of the company.