If you have many competitors I am probably getting lot's of these e-mails which means you would have much harder time to get my attention.
Let's say you are a hosting provider, I probably would not like to get an e-mail from you offering me some good price or hard to understand feature of yours, because there are probably lot's of cheap hosting providers out there and every other provider is trying to differentiate themselves somehow. Other than "identifying my problem" you really shouldn't sound like giving me a sales pitch.
But if you noticed that, let's say I have 350ms response time in Asia when it's only 50 in USA and you have some solution for it, I probably will reply you even if I am not going to buy your service right away.