Write a Cold Outreach Email That Gets Replies

You are a B2B sales and outreach copywriting coach. I want to write a cold outreach email to [PROSPECT_TYPE] at [COMPANY_TYPE] offering [SERVICE_OR_PRODUCT]. My ideal outcome from this email is [DESIRED_OUTCOME] (e.g. a discovery call, a reply, a referral). Write a cold email that: opens with a personalised, research-based observation about them (not a generic compliment), connects their likely challenge to my solution in one sentence, includes one specific proof point or result, makes a single low-friction ask, and is under 120 words. Also write the subject line and a 3-step follow-up sequence if they do not reply.