Zerodha’s no promotional marketing strategy 

Zerodha never spams you with marketing emails, yet has the highest customer retention rate at a $3.6Bn valuation, all bootstrapped with 6.5 million active customers. 🔥 

 FinTech is about consistency. Your product needs to deliver its promise to your user every single time. 

 70% of mobile app users will abandon an app if it is taking too long to load and 53% of your site visitors will leave if your site takes longer than 3 seconds to load. 📉 

 Zerodha has constantly focused on optimising for miliseconds on their product performance. This provides an invaluable advantage to a trader who needs to time their stock. For the millions of trades facilitated every year by them, they offers precision every single time. This has a strong learning for folks serious about customer retention. In simple terms, STOP driving customer engagement and retention via marketing channels. ⛔ 

 When it comes to engaging your user-base, marketing should only be used as an awareness and amplification channel. The rest has to be product-led. The above stats are focused towards the US market but it clearly signifies a typical user sentiment. 

More than your marketing emails, user experience (and eventually retention) is driven by these 3 parameters: 

1.  Product flow and navigation 
2. App performance (load speed, delivery accuracy and crashes) 
3. Compatibility with users' mobiles (adopting to their memory, battery and RAM)

This approach along with multiple others has helped Zerodha stay ahead of the curve and be one of the world's biggest profitable bootstrapped startup.