I've been doing cold email for 4+ years. It's really not personalization that gets results.
We get 5 leads every day and the only personalization we do is mentioning their ICP.
What actually works is:
A strong front end cold traffic offer
Proof
A cta tied to value (something that's easy to say yes to and brings value. Not a one-pager, not a deck, but something built specifically for them)
That's it