Subject Line Generator

Generate 10+ subject line options for a given email, score each one, and return a ranked shortlist for testing.

What you need

• Email body (step 1 at minimum)
• ICP and persona context
• Signal the email is built around
• Channel: cold email or LinkedIn InMail

Principles

• Subject lines under 6 words perform best in cold outbound
• Never use the company name in the subject line — it reads as a template
• Curiosity beats clarity when it comes to cold email subject lines
• Questions outperform statements when the question is specific, not generic
• Personalization tokens work only when they're signal-derived, not just [First Name]