Instructors on BMF.io should for sure send follow-up emails after someone buys their first course. It's a chill way to say thanks and help students feel more welcome. A quick message with some tips or even suggesting other courses can make a big difference. It shows you care and keeps people motivated to actually finish the course. Plus, it helps build a good vibe between the instructor and student, making them wanna come back for more. Honestly, sending follow-up emails is an easy move that can really up engagement and keep students hooked on BMF.io.