Here is a good example, a semi-cold email I responded to and funded recently
It does a good job of summarizing the opportunity, early customers and traction, growth profile, and market size. Perhaps just as importantly, it is truly personalized.
Also for me at least, it’s low drama. “Do you have any time the week after next?” The confident and relatively data-rich but low drama emails work best. Knowing there’s a little time makes it much less risky to meet a founder you’ve barely met before and dig in.
More on the story (and how the first cold email didn’t work at all) here: How I Turned A Cold Email Into A $2.5M Seed Round – Noteworthy – The Journal Blog