Subject Line Scorer

Score a subject line — or generate proven ones from scratch.

✨ Generate
🎯 Score Mine
📖 Patterns
Tell me about your prospect
Paste your subject line

🏆 The formulas that actually work

"Quick question about [Company]'s [topic]?"
→ "Quick question about Freshworks' onboarding flow?"
Short, personal, curiosity-gap. Scores 40–46/50 consistently.
"Idea for [Company]'s [role/team]"
→ "Idea for Freshworks' sales team"
One of the highest-converting cold email formulas ever tested. 5 words, crystal clear.
"[Name], saw your post on [topic]"
→ "Sarah, saw your post on scaling SDR teams"
Proves you did homework. Disarms immediately. High reply rates.
"How [similar company] [achieved result]"
→ "How HubSpot cut their ramp time by 30%"
Social proof + curiosity gap. Reader wants to know how.
"[Trigger event] → thought of you"
→ "Saw [Company] just raised a Series B — thought of you"
Timely and personal. Shows you're paying attention.
"[Name] — [specific, unexpected statement]"
→ "Sarah — most VP Sales skip this one step"
Pattern interrupt. The name + dash stops the scroll.

🚫 What tanks your score every time

"Free", "Guaranteed", "Urgent", "% off"
Spam filter triggers. Filters catch them before humans do.
Subject lines over 12 words
Gets cut off on mobile. Reader gives up before they start.
"Following up" / "Checking in" / "Just circling back"
Zero curiosity, zero personalisation. The laziest subject lines in existence.
ALL CAPS or excessive punctuation!!!
Screams spam. Also just annoying.

📐 The golden rules

✅  5–8 words is the sweet spot
✅  Mention their name OR company — not both
✅  One idea only — never cram two topics in
✅  A question usually outperforms a statement
✅  Specific beats clever — "30%" beats "significant"
✅  Write it last — after you know exactly what value you're delivering