Email Subject Line Generator

Generate 15 email subject lines for our [CAMPAIGN TYPE] campaign. Campaign goal: [YOUR GOAL]. Audience: [YOUR AUDIENCE]. Context: [BRIEF CONTEXT]. Include a mix of: 1) Curiosity-driven, 2) Benefit-focused, 3) Urgency-based, 4) Personalization-friendly, 5) Question-format. Mark which are better for cold vs. warm audiences.