The author of the text documents their experience building a waitlist for their product Resend. They share what worked well and what didn't, highlighting the importance of creating a simple yet unique landing page to differentiate themselves from competitors. The success of social media posts in growing their following is also mentioned, emphasizing the value of consistency and engaging content. Additionally, they discuss the challenges of performance testing, email address validation, and processing the waitlist, offering actionable tips for founders building their own waitlists.