unless you're going to have an actual human do it, I think it might be better to just not try. I get tons of messages on linkedin from recruiters who say something like "wow impressive profile! based on your experience at {current role}, we think you'd be a great fit for company XYZ". except company XYZ is always some web service company in a totally different domain. my current job is working on a niche desktop c++ product. if I'm a "great fit", so is anyone else with a pulse and a cs degree.

if I get a generic message saying "hey I'm recruiting for company XYZ, here's what we do", I might respond if it sounds interesting. I'm definitely not going to respond if you make it obvious that a bot scraped my profile and didn't understand anything about it.

On that topic, it also doesn't change my mind if you have a bot send a template email or you have a human blindly fill in and send a template email.

Hi, ${user_name}! How do you like our product?

We are working hard on ${first_clicked_link}.

BTW, ${user_browser} rules!

That last part is just creepy.

"Your location (${location}) is near mountain X, we should go hiking one day."

Perfect!

If they're using a company email, maybe read their company website for 1 minute?

"Netlify has proven exceptionally useful for innovative energy companies like yourself and {other energy industry client}"