I'm Director of Sales for an open source consulting company (EU based with a small staff here in the US) so I do this a lot. It really is a crap shoot. I get a

I'm Director of Sales for an open source consulting company (EU based with a small staff here in the US) so I do this a lot. It really is a crap shoot. I get a quick response of some sort about 3/10 contacts. However I don't contact anybody unless I see something about their company that gives me a specific idea of where we might be able to help them. I never, ever call / email somebody for an appointment to learn more about business. I call because I noticed their website isn't responsive to mobile devices and 35% of their target market is mostly online via mobile devices, or their site is mostly flash, or I met an employee at a networking event who told me how much they all hate Sharepoint, or whatever. That said, we just landed a new client that called me back out of the blue months after I initially contacted them. So you never know...