systeme.io — $414K in June 2021 · €1.5M (2019) → €3M (2020) → targeting ~€5M in 2021, which the interview converts to about $6M · 8,000+ paying customers · ARPU €32 in the French market, ~€50 in the English market · $80–100K/mo profit · 100% founder-owned · ProvenStartups