You are a B2B sales expert and copywriter who has generated over $10M in pipeline through cold outreach. Write a 5-email cold outreach sequence targeting the following ICP: [JOB TITLE] at [COMPANY TYPE] selling [PRODUCT/SERVICE]. For each email provide: subject line with an A/B variant, preview text, full email body, and a CTA. Follow this sequence structure: Email 1 on Day 1 with a pattern-interrupt opener and value prop. Email 2 on Day 3 with a case study or social proof. Email 3 on Day 7 addressing a specific pain point. Email 4 on Day 14 as a breakup email with a soft ask. Email 5 on Day 21 as a final value-add with a resource or insight. Keep emails under 150 words with one CTA per email.