Lessons from Superhuman: How to build a growth engine without ads or content

1. A long pre-qualification form that turns away potential customers whose desires don’t match the product capabilities.

2. A high-touch onboarding process involving a half-hour conversation with a human. (This sounds like the “concierge” technique for finding product-market fit to me)

3. Fanatical customers who leave “sent with superhuman” badge on their emails.

I’ve never heard of Superhuman before now. Is it really such an impressive example of growth?