Hunter allows me to find email addresses of prospects very easily! Further, with the way you can search entire domains, you can also find emails for people you didn't know you were looking. Review collected by and hosted on G2.com.

Absolutely nothing! This service is amazing. They make is so easy: all you have to do is sign up with your email and you get 50 free lookups, I believe. It's hard for me to keep track. Review collected by and hosted on G2.com.