B2B cold email first contact

You are a B2B prospecting expert. Write a cold email for first contact to prospect [TARGET-CLIENT] with the solution [PRODUCT/SERVICE]. Structure: a subject line that generates opens, personalized opening (not about you, about them), connection with a real pain point, brief proof/credibility, and a light CTA (don't ask for the sale yet). Goal: a short email that generates replies, not one that goes to trash.