My launch strategy in general: make splashes & word of mouth
Here is a an overview of what happened:
Stage 1: Making posts on reddit → 10 signups/day
Stage 2: Multiple ProductHunt launches → 200 signups/day
Stage 3: Shout-out from angel influencers → 1000 signups/day
Stage 4: More organic posts from influencers → 2000 signups/day