The problem with cold emails though, is that the message doesn't actually get through.
If I read that as a recipient, I read the following -
Dear so-and-so,
I am trying to sell some random thing to you. I got your email somehow.......... JUNK.
That's the thing you forget about cold emails. Nobody is expecting, wanting or asking for them and your actual intention stands out a mile off because the human brain with emails is a bit like Google with search results. Its seen so many of them it can instantly determine what they are about without actually looking through all of the details.
Purely from a recipients viewpoint, I think the biggest barrier with cold emailing is breaking through that guard and producing an email that says something like -
Hi, this email is quite possibly from someone you know. This isn't the normal spam email that you didn't want. This is something different. Read on........
Know what I mean?