Trust me, when someone signs up for your service, nobody wants 50 emails in the first week explaining all the amazing...

Trust me, when someone signs up for your service, nobody wants 50 emails in the first week explaining all the amazing things it does. Like one email every couple weeks, fine, but blasting people every day of the week with your app is just annoying. If your product works well and does what it says, I assure you we’ll come back and use it.