Act as a seasoned cold email strategist with 5+ years of experience in B2B outreach. Craft a step-by-step guide on how to effectively use personalization tokens (e.g., {{First_Name}}, {{Company}}, {{Industry}}) in cold emails to increase open and reply rates. Include: 1. Best practices for sourcing accurate [CONTACT_DATA] (e.g., LinkedIn, CRM tools). 2. How to structure dynamic [EMAIL_TEMPLATES] that feel authentic, not robotic. 3. Examples of high-converting subject lines using [PERSONALIZATION_HOOKS] (e.g., '{{First_Name}}, quick question about {{Company}}’s goals'). Avoid overloading tokens—explain the balance between personalization and scalability. Provide 3 real-world examples demonstrating poor, good, and exceptional usage.