For years, email was one of the best ways for parkour gym owners to stay in front of members and leads. Whether you were sending newsletters, updates about events, or promotions to book free trials, the general rule was: send more emails to more people. Maybe you ran a big list of subscribers. Maybe you automated nurture sequences for new leads. Maybe you even used AI to help write it all. That used to be fine. But as we move into 2026, the game has changed dramatically.