📬 Email Subject Line Generator

Describe your email's content, audience, and goal. Get 20 subject lines in 5 proven styles — curiosity, benefit, urgency, personal, and question.

💡 Pro tip: Subject lines under 40 characters have the highest open rates on mobile. Always A/B test your top 2 picks.

What Makes a Great Email Subject Line?

The best subject lines are under 40 characters, create curiosity or communicate clear value, and avoid spam trigger words. This tool generates 20 options across 5 proven styles: curiosity, benefit-driven, urgency, personal/conversational, and question-based. A/B testing your top 2 picks can improve open rates by 20-40%.

Frequently Asked Questions

How long should my subject line be?

Under 40 characters performs best on mobile, where most emails are opened. Aim for 4-7 words.

Should I use emojis in subject lines?

Emojis can increase open rates in B2C emails but may look unprofessional in B2B contexts. Test with your audience — one emoji at the start can catch the eye in a crowded inbox.

Related tools: Cold Email Writer · Tagline Generator · Business Name Generator