The hyper-personalized product-led growth levers that drove the all-in-one customer service tool's growth to 9000 customers and a $300 million valuation ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌