The line between "cold emails" and spam is quite thin. If you don't want me to mark your email as spam: * Do your research about me and my company and what we

The line between "cold emails" and spam is quite thin. If you don't want me to mark your email as spam: * Do your research about me and my company and what we need. If we're a scala shop, yeah, I'd be interested, but if we're a python shop, you're likely to annoy me with your pitch for a scala product. * The fact that you're the co-founder certainly helps. * Use your company's email. Using a random gmail account makes me think that you're using it as a throwaway account. Don't even think of using hotmail, yahoo, etc. * Don't spray. If I find out that you've sent emails to 5 of my co-workers at the same time, you're much more likely to go to spam. I've been on the other side, and these are all rules that I've used when I tried to get people interested in my products.