Marc Seitz, co-founder of Papermark, wanted to build an open source DocSend alternative, but his wife gave him one rule: tweet the idea first and only build it if people care. The tweet pulled 450 likes and 95,000 views, he shipped version one in a weekend, and today Papermark is a bootstrapped, profitable SaaS at $3M ARR with 3,000 paying customers and 60,000 teams. In this interview he shares the 4 months it took to go from $1M to $2M, the free plan pulling 100 signups a day, and what he would say to a $30M offer from Dropbox. 0:00 Intro How do you validate a SaaS idea with one tweet? 1:17 His wife's rule: tweet first, build second 1:54 Built in one weekend, went viral twice 3:08 What 8,900 GitHub stars are worth in ARR How do 100 signups a day turn into revenue? 7:41 3,000 paying customers 9:03 100 signups a day on a free plan 10:08 The viral loop inside 60,000 teams Would they sell for $30M? 12:08 $1M to $2M in 4 months 13:18 Where revenue finishes in 2026 15:18 Dropbox offers $30M cash. Sell? Subscribe on YouTube: https://www.youtube.com/@NathanLatkawatch?sub_confirmation=1 Subscribe on iTunes: https://podcasts.apple.com/us/podcast/top-founders/id1023761733 Subscribe on Spotify: https://open.spotify.com/show/3AA9buFn8oxJf8WSDOUks5 Looking for funding? Visit https://founderpath.com/