Is Your Email Subject Line Good Enough?

AI-powered analysis in 2 seconds. Free.

0/5 free analyses used today

How It Works

1

Paste Your Subject Line

Enter the email subject line you want to test

2

AI Analysis

Our AI evaluates clarity, urgency, and more

3

Get Better Versions

Receive scored analysis + 3 improved alternatives

Pricing

Free

$0
  • ✓5 analyses per day
  • ✓Full AI analysis
  • ✓3 alternative versions
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Pro

$9/month
  • ✓Unlimited analyses
  • ✓Advanced AI insights
  • ✓Export reports
  • ✓Priority support

Tips for Great Subject Lines

📏 Keep it short (40-50 characters)

Mobile devices cut off long subject lines. Get to the point quickly.

🎯 Be specific, not vague

"Save 30% on sneakers" beats "Great deals inside"

⚡ Create urgency (when genuine)

Use deadlines and scarcity, but don't lie. Trust matters.

🔢 Use numbers and data

"5 ways to boost productivity" is more clickable than "Productivity tips"

🚫 Avoid spam triggers

Words like FREE, $$, URGENT in all caps can hurt deliverability

✨ Test, test, test

A/B test different subject lines to see what resonates with your audience

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