Generate high-converting email subject lines for a [CAMPAIGN_TYPE: newsletter, promotional, abandoned cart, welcome series, event invitation] email targeting [AUDIENCE_DESCRIPTION] for [BRAND/COMPANY_NAME] in the [INDUSTRY] space. Email content summary: [BRIEF_DESCRIPTION_OF_EMAIL_CONTENT] Our brand voice is: [BRAND_VOICE: professional, casual, quirky, authoritative, friendly, etc.] Please create: Subject Line Variations (10 total): 2 curiosity-driven subject lines that create intrigue 2 benefit-focused subject lines highlighting value 2 urgency/scarcity-based subject lines (if applicable) 2 personalized/segmentation-focused subject lines 2 question-based subject lines that prompt opening For each subject line, include: Character count (optimal: 30-50 characters) Emotional appeal category Click psychology trigger utilized Predicted effectiveness rating (1-10) Preheader Text Options: Complementary preheader text for each subject line (85-100 characters) Explanation of how each preheader extends/enhances its subject line A/B Testing Strategy: Recommended subject line pairs for A/B testing Specific elements being tested in each pair Hypothesis about which might perform better and why Key metrics to evaluate success (beyond open rate) Spam Trigger Analysis: Review for potential spam trigger words or patterns Alternative phrasing for any problematic elements Deliverability optimization suggestions Audience Segment Variations: Subject line adaptations for different customer segments: New subscribers vs. loyal customers Different demographic groups Engaged vs. unengaged subscribers Personalization token recommendations Timing Optimization: Day of week recommendations for this campaign type Time of day suggestions based on industry benchmarks Seasonal or contextual modifications if relevant Please ensure all subject lines are compelling, on-brand, and optimized for both open rates and setting appropriate expectations for the email content.