MarketingManusEmail Subject Line Generator
Get subject lines that people actually want to open.
Your result will appear here.About the Email Subject Line Generator
Your subject line decides whether your email gets opened. This tool gives you a mix of styles — curiosity, direct, benefit, question and urgency — so you can pick the one that fits.
Manus avoids clickbait: every line should match what's actually in your email.
Frequently asked questions
How long should an email subject line be?
Around 30–50 characters works well, especially on mobile where long lines get cut off.
Should I use emojis in subject lines?
Sparingly. One relevant emoji can stand out, but too many can look spammy.
What makes a good subject line?
It's clear, specific and honest about what's inside, and gives the reader a reason to open now.
Should I A/B test subject lines?
Yes. Pick two of the generated lines and test them on a small part of your list before sending to everyone.