Here is a post from Reddit on cold emailing that is worth your time to read because it gives you a completely different voice and approach:

The drunk cold email that changed my life.

Here is his thesis:

Impact/Communication/Persuasion

So many cold approaches such because they go straight to persuasion.

The very first line starts with something like … “We’re the best people in the world at X… We’ve worked with X client and are ground-breaking X technology is a world’s first…”

YUCK! Of course, that gets deleted!

Your job is to sell the idea that a call or meeting with you is not a bad idea. Not to give every little detail – or to sell your entire offering in one go. Those steps come later…

It would be well worth your time to take a look.