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Email Subject Line Analyzer

Struggling with open rates? Analyze your subject line, boost clicks, and outsmart spam filters—in seconds.

Built with ❤️ by Techdella for busy marketers, founders & creators.

Why Your Subject Line Matters More Than You Think

47% of recipients open emails based *only* on the subject line. That means if yours doesn’t click—neither will they. Think of it as your email’s first impression. You only get one.

Cut Through the Noise

Your email is one of hundreds. A sharp subject line gives you a fighting chance at being seen—and opened.

Bypass the Spam Filter

Using the wrong words can flag spam filters. Our analyzer helps you avoid risky phrasing and boost deliverability.

Turn Opens Into Revenue

No opens = no clicks = no sales. A compelling subject line can be the fastest upgrade to your email ROI.

Subject lines you’ll want to steal

Need inspiration for your next email campaign? Tap a category below to discover real, high-performing subject lines you can swipe and send today.

Your Subject Line: Small Text, Big Impact

Over 120 emails hit your customer's inbox every day. The subject line is your only shot at being noticed, let alone clicked. Skip the fluff—optimize or be ignored.

47%

open emails based on the subject line alone.

70%+

mark emails as spam due to poor wording.

40%

boost in open rate from optimized lines.

What You Risk with a Weak Subject Line

  • Lower open & click rates
  • Unseen promos, launches & sales
  • Damaged deliverability and trust

Which Line Wins?

A: May Sale is Live
B: Last Chance: 20% Off Ends Tonight

Option B drives urgency and curiosity—two triggers your inbox needs.

What Makes a Subject Line Click-Worthy?

  • ✔ Short, punchy, and clear (under 50 characters)
  • ✔ Communicates value, not hype
  • ✔ Light urgency or benefit-driven words
  • ✔ Uses personalization when possible
  • ✔ Avoids spammy triggers like “free” or ALL CAPS

Want help writing irresistible subject lines?

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