Act as a seasoned cold outreach specialist with 5+ years of experience in high-conversion email campaigns. Craft a compelling cold email template that leverages scarcity to drive urgency and action. Include: 1) A [TIME-SENSITIVE OFFER] (e.g., 'Only 3 spots left this month'), 2) A [UNIQUE OPPORTUNITY] (e.g., 'Exclusive access to our beta program'), and 3) A [SOCIAL PROOF ELEMENT] (e.g., 'Join 500+ satisfied clients'). Ensure the email is concise (under 150 words), personalized with [PROSPECT'S INDUSTRY], and ends with a clear CTA. Explain why scarcity works psychologically in this context.