Hey there,

Quick experiment:

Look at the last 10 emails you’ve opened.

What do they have in common?

Chances are, most were from real people – not businesses. And their subject lines? Shockingly concise and casual. Like:

  • intro
  • follow-up
  • quick question
  • (no subject)
  • video
  • link

Now, compare these to typical marketing emails:

❌ “Discover How to 10x Your productivity with Our New Tool!”

✅ “quick question”

The first one screams “marketing email”. The second feels like a message from a colleague or a friend.

Using short, informal subject lines in your cold emails can help you reach 65%+ open rates. Here’s why:

1️⃣ Human touch

These subject lines mirror how real people write emails, making them feel more authentic.

2️⃣ Curiosity gap

Short subject lines create mystery. What’s the “question”? What’s the “info”? The only way to find out is to open.

3️⃣ Pattern interrupt

In a sea of polished marketing messages, these casual lines break the monotony and grab attention.

That’s it for today. Got a casual subject line that’s working well for you? Hit reply and let me know – I’d love to hear about it!

Happy sending,

Laura