Practo and UrbanClap have a sense of entitlement that is appalling. Merely because I use their service does not mean I agree to receive dozens of SMS and email messages. The messages, websites and apps offer no way of unsubscribing from these messages. What is worse, once you install the app, there is no way to turn off promotional notifications while still keeping service notifications enabled. In this last bit of smugness, they are joined of course by the stalwarts of the startup boom - Flipkart, Grofers, etc.

No one cares about your business model, startups. No one wants to be forced to give feedback on your doctors or carpenters so you can build awesome content for your site. Irritate the customer, and they will move on, no matter how good your offerings. It is a week and I have already dumped both these services, having to filter out their messages using Truecaller.

Learn from folks like Amazon and Uber, who offer convenient options to turn off promotional messaging of this sort.