How to Write Subject Lines That Actually Get Clicked
You’ve written the perfect email packed with value, irresistible offers, and a killer CTA. But if your subject line flops, none of that matters.
Your subject line is the first (and sometimes only) chance to grab attention and get that all-important click.
So how do you write subject lines that rise above the noise in a crowded inbox?
Let’s break it down with simple tips, real examples, and proven strategies that actually work.
Why Subject Lines Matter So Much
Think of your subject line as the headline of your email.
If it’s boring, vague, or spammy? Delete.
If it’s clear, compelling, and curiosity-driven? Click.
It’s that simple.
Your open rate is directly tied to your subject line.
A strong one boosts engagement. A weak one tanks your email before it’s even opened.
7 Key Ingredients of Click-Worthy Subject Lines
Here’s what high-performing subject lines tend to have in common:
1. Clarity > Cleverness
People should instantly know what the email is about.
Clear: “Free Guide: How to Start Your Email List”
Confusing: “Your inbox will thank you later…”
Cute is fine — but clarity wins every time.
2. Curiosity
Pique interest without being clickbaity.
“The #1 mistake most email marketers make” “You won’t believe what happened after day 30” “Click this or else…”
Give just enough to make them want more.
3. Urgency + Scarcity
Make them feel like now is the time to act.
“Last chance to grab your spot (closing tonight)” “Only 2 hours left to get 50% off”
But use this sparingly — fake urgency kills trust.
4. Personalization
Use their name or reference their interest.
“Hey Sarah, still thinking about starting a podcast?” “Struggling with low open rates? This might help.”
Most email platforms make personalization easy — use it!
5. Numbers + Lists
Numbers add structure and promise something bite-sized.
“5 email tweaks that boosted our CTR by 40%” “3 ways to grow your list without paid ads”
They also stand out visually in the inbox.
6. Questions
A good question makes the reader pause and reflect.
“Are you sending emails no one’s opening?” “What’s holding back your email growth?”
Questions feel conversational and naturally invite a click.
7. Short & Sweet
Aim for 6–10 words or under 50 characters.
“Your free download is inside” “Ready to grow your list?”
Mobile screens cut off long subject lines — keep it tight.
Real Subject Line Examples You Can Steal
Here’s a mini swipe file to inspire your next email:
| Goal | Subject Line Example |
|---|---|
| Deliver a freebie | “Here’s your free workbook ” |
| Promote a webinar | “Going live in 1 hour – don’t miss this” |
| Sell a product | “20% off ends tonight (your last reminder)” |
| Re-engage cold leads | “Still interested in growing your list?” |
| Build trust | “What I wish I knew starting out” |
| Educate | “3 ways to boost open rates today” |
Words to Avoid (That Might Trigger Spam Filters)
Stay away from these spammy red flags — they could land you in the junk folder:
“Free!!!” (especially with multiple exclamations)
“Make money fast”
“Act now!!!”
ALL CAPS
Emojis overload
Instead, keep it authentic, helpful, and human.
Bonus Tip: A/B Test Your Subject Lines
Most email platforms let you test two subject lines against each other.
Use this to find out what your audience actually responds to.
Try testing:
-
Personal vs. non-personal
-
Urgency vs. curiosity
-
Short vs. long
Let data guide you.
Final Thoughts
The best subject lines don’t try to trick or hype. They match the value inside the email, speak directly to your reader, and make them want to click.
So next time you write an email, don’t rush the subject line.
Test it. Trim it. Make it work just as hard as the content it’s introducing.
Because if no one opens your email… it might as well not exist.
