Email Subject Line Analyzer
Analyze your email subject lines for spam triggers, power words, character count, and get actionable tips to improve your open rates.
Enter Your Subject Line
Try these examples:
Enter a subject line and click
"Analyze Subject Line" to see your results
Email Subject Line Best Practices
📏 Length Guidelines
- 30-50 characters: Optimal for most email clients
- 6-10 words: Easy to scan and understand
- Mobile preview: ~35 characters before truncation
- Desktop preview: Up to 60-70 characters visible
🎯 Content Tips
- Be specific: Clear, actionable, and relevant
- Create curiosity: Make them want to open
- Use numbers: "5 tips" performs better than "tips"
- Ask questions: Engage with curiosity
🚨 Avoid These
- ALL CAPS: Looks spammy and aggressive
- Too many !!! One exclamation mark maximum
- Spam words: "Free", "urgent", "guaranteed"
- Generic subjects: "Newsletter" or "Update"
Power Words That Boost Open Rates
📈 Growth & Success
🔍 Discovery & Learning
⭐ Quality & Value
🚀 Innovation & Speed
Frequently Asked Questions
What's the ideal subject line length?
30-50 characters or 6-10 words is optimal. This ensures your subject line displays fully on mobile devices while remaining scannable and impactful.
Should I use emojis in subject lines?
One relevant emoji can increase open rates by standing out in crowded inboxes. However, avoid overuse and ensure emojis match your brand voice and audience.
How important is personalization?
Personalized subject lines can increase open rates by 26%. Use the recipient's name, company, or reference their specific interests when possible.
What are spam trigger words?
Words like "free", "guaranteed", "urgent", and "click here" can trigger spam filters. While not completely banned, use them sparingly and focus on value-driven language instead.
Ready to create email campaigns with optimized subject lines?
Try SkunkCRM - Complete Email Marketing & CRM