email-subject-optimizer

What problem does it solve?

Generate high-converting email subject lines that maximize open rates by crafting diverse variants tailored to audience segments and campaign goals.

Core Features & Use Cases

• Generate 10 subject line variants across 5 archetypes (Direct, Curiosity, Specificity, Personal, Question).
• Score each variant by Length, Personalization, Clarity, Intrigue, and Spam risk; provide a numeric Score.
• Filter and select Top 2-3 variants for A/B testing across campaigns (cold outreach, newsletters, drip emails).
• Use prerequisites like ANTHROPIC_API_KEY and the email body or core message to anchor relevance.

Quick Start

Provide the email body and audience segment to generate and rank subject lines for testing.