Act as a seasoned sales strategist with 10+ years of experience in cold outreach. Craft a step-by-step guide on how to effectively use questions in cold emails to [TARGET AUDIENCE] for [SPECIFIC GOAL, e.g., booking a meeting, driving sign-ups]. Explain the psychology behind question-based hooks, provide [NUMBER, e.g., 3-5] proven question templates tailored to [INDUSTRY], and warn against common pitfalls like [MISTAKE, e.g., overly generic questions]. Include before/after examples showing a bland email vs. one with strategic questions that [DESIRED ACTION, e.g., prompt replies]. Format as a actionable checklist.