I used to spend hours crafting the perfect pitch. The subject line was compelling, the announcement was newsworthy, and I found the perfect reporter. However, all I heard was crickets. Should I email Techcrunch again? Is it too soon to follow up? Am I coming off as annoying? Should I try a different subject line? Why wasn’t I getting a response? Well, I’ll share with you the tools that helped me from agonizing over those questions and gave me real data that I could work from. Here are 4 email tools for growth hackers.