Email Subject Line Counter
Optimize email subject lines for better deliverability and open rates
Email Subject Line Guidelines
Email Subject Line Best Practices
Mobile-First Design
Over 60% of emails are opened on mobile. Keep your most important words within the first 30 characters.
Front-load Important Words
Put the most important information at the beginning of your subject line to ensure it's visible even if truncated.
Avoid Spam Triggers
Avoid excessive capitals, exclamation marks, and words like "FREE", "URGENT", or "SALE" that trigger spam filters.
Create Urgency
Use action words and create a sense of urgency without being pushy. Focus on benefits and value.
Email Subject Line Counter FAQ
What's the ideal length for email subject lines?
30-50 characters is optimal for most email clients. This ensures your subject line is fully visible on both mobile and desktop devices.
How do different email clients display subject lines?
Gmail mobile shows ~33 characters, iPhone Mail shows ~35 characters, and desktop clients typically show 60+ characters. Mobile-first design is crucial.
Should I use emojis in email subject lines?
Emojis can increase open rates when used sparingly and appropriately for your audience. However, they count toward character limits and may not display correctly in all email clients.
What words should I avoid in email subject lines?
Avoid spam trigger words like "FREE", "URGENT", "ACT NOW", excessive punctuation, and ALL CAPS. These can hurt deliverability and open rates.