How To Write Killer Subject Lines

Jelani Abdus-Salaam
November 24, 2021

Writing killer subject lines is a skill every email marketing manager should have. It helps ensure your emails get opened and eventually convert into leads or sales. But how do you write these high-impact, attention grabbing subjects? Well there are numerous ways to learn more about crafting an effective subject line that can boost open rates up to 10%.

The “professional email subject line examples” is a guide that will teach you how to write killer subject lines. The article will give you some great tips and tricks on how to create the perfect subject lines for your emails.

Some of your consumers will just read the subject line of an email. Finding the perfect phrases to spark their attention is thus not just necessary, but critical to the success of your company.

However, how do you decide what to put in your subject line? The objective is to pique people’s interest, create a sense of urgency, or somehow make them want to keep reading. It’s up to you how you do it, but in this post, we’ll go over some of the most prevalent methods employed by successful businesses all around the globe.

Most individuals create a subject line after they’ve finished writing the email’s content, but we recommend writing with the subject line in mind first. Indeed, having a crisp, clear, and succinct description of your e-content mail’s will not only help you increase your open rate, but it will also improve the overall quality of your material.

But, in the end, it’s the results that count. That’s why we’ve only included the most effective conversion-boosting tactics used by organizations and entrepreneurs all around the world. If it worked for them, it should work for you as well!

High-Performing Subject Lines Examples

When most individuals sit down to write an email to their audience, they normally give the topic a lot of consideration. They are unsure what sort of information should be included in the introduction paragraph, how many pictures (if any) should be included, and how to entice the reader to take action (buy, read, forward, etc).

Even though that brief little statement is the doorway to the remainder of your email, we don’t spend nearly as much time thinking about it. If the subject line isn’t interesting enough, no one will read the email, and all of your other efforts will be for nothing.

Most marketers would say that coming up with the appropriate subject line is generally the most difficult task. We can describe everything in detail with hundreds or even thousands of words. It took a lot of thinking to condense it into 50 characters or fewer.

Here are some samples of great subject lines that you can save in your swipe file and use whenever you need them, along with a quick explanation of why they perform.

“Important Weather Advisory” is a warning issued by the National Weather Service.

Whether it’s a hurricane, tornado, or simply excessive heat, weather-related notifications have a way of grabbing our attention. It implies that you must respond immediately, regardless of what you are doing at the moment.

However, RCN, a New Jersey-based internet, television, and phone provider, sent out this email, not a weather service. What’s more, they weren’t even informing prospective consumers about upcoming weather; instead, they were alerting them to the possibility of interruptions and offering alternatives to keep these services operational in an emergency.

“How Much Can You Spend?”

When it comes to subject lines, questions are really effective. They compel the reader to react in some manner, even if that action never results in an email being opened.

This email, however, from the online real estate marketplace ZIllow, was a huge hit. Zillow was able to make the e-mail appear more personal without ever mentioning the reader’s name by including a question in the subject line. It also made people want to open up to explore what kinds of houses they could afford, resulting in a massive increase in click-through rates.


Knowing your target is crucial, and Thrillist understood their followers were avid social media users in this situation. As a result, they made care to incorporate two elements in their email blast: terror and amusement.

We’ve all seen cringe-worthy social media postings, and Thrillist tapped into that dread by providing its readers instances of what not to post on Instagram, as well as some recommendations on how to prevent it. Even if readers aren’t on Instagram, they’d have opened the email to see what kind of ridiculous postings individuals have posted.

“9 Embarrassing Thanksgiving Facts”

Holidays are often associated with love, family, and food. That’s why Eat This, Not That decided to send this email to its subscribers, debunking every common misconception about one of the most popular holidays: Thanksgiving.

ETNT’s purpose was not to sell anything to the reader; instead, they intended to provide helpful information and attract traffic to their website. This is part of the crucial “service” attitude in digital marketing (and conversely, so underused). People will quit reading your emails if you attempt to sell everything all of the time. However, sending them content-heavy emails is a certain method to boost that open rate.

“What did they do with a pair of Crocs?” you may wonder.

Crocs have managed to carve themselves their own tiny niche of enthusiasts in a very competitive market like footwear. They wear them everywhere — even with suits! — so it’s only natural that they’d send you an email with tips on how to utilize your Crocs.

Instead of merely saying, “Here are five ways Crocs are utilized,” which would be dull, they came up with this subject line. I’m sure some individuals opened it out of curiosity, but I’m willing to bet that at least a few others got some ideas for their own personal usage — then purchased some pairs to make it happen.

Again, entertainment and content work together to boost purchases.

Writing Killer Subject Lines: Some Pointers

When it comes down to it, crafting great subject lines is all about piqueing your reader’s interest. Stopping the scroll is what social media gurus call it, and it should be your objective as well. When individuals read their email, you want them to “stop scrolling” and open your message because they can’t wait to see what’s inside.

But how do you go about doing that? Here are a few pointers from industry professionals, many of which were used in the instances above.

Tell a Tale

What person doesn’t like a good story? Even if they have no intention of purchasing anything, the majority of individuals will read an email if they believe they will be amused or educated. Writing a subject line that begins with “Why I Always Buy Travel Insurance” may not seem like the opening of the next great American novel, but it does hint to an intriguing narrative on the email’s interior. All they have to do is press the “open” button.

Adventure and leisure firms are the best at developing story-based topic lines of any industry. REI and Patagonia, for example, are wonderful instances of these sorts of topic lines.

Specify a Name

No, I’m not referring to someone else’s name; I’m referring to the recipient’s name. Almost every major email marketing tool now enables you to incorporate customisation choices, such as a person’s first name, directly into the subject line. Even if it’s on a generic commercial email, there’s something about seeing your own name in paper that makes you pay attention.

Because this technique might be overdone, it’s best to accompany it with something attention-getting, such as “Hey Mike, did you forget anything?” (for a cart abandonment email) If you really want to ramp up the heat, consider substituting an emoji for a word or two. Use the fire emoji instead of indicating you have “hot” discounts, for example. It conveys more information and shines out on the page.

Maintain a straightforward approach.

Whatever your opinion of Barack Obama, he is a brilliant marketer — or, at the very least, has a master marketing team behind him. His 2008 and 2012 campaign emails were so basic and uninteresting that if they were sent by someone else, they would be entirely meaningless.

Nonetheless, there was something enthralling about them. One subject line had merely the word “Hey,” as if the President of the United States were sending you a personal message. It’s simple yet really effective, particularly when every other firm in your industry is overwriting subject lines.

Tell them about the deal.

When everything else fails, simply go straight to the point. Let them know if you have a 20 percent discount coupon on the inside. In the subject line, mention any current BOGO offers you want your clients to take advantage of. Follow-up orders or abandoned cart emails benefit greatly from these sorts of communications.

However, be wary of bait-and-switch methods. You must include anything you promise in the subject line in the email, otherwise they may not only unsubscribe, but they may also classify you as spam.

The “personal email subject lines examples” is a blog post that gives some great ideas for creating subject lines.

Frequently Asked Questions

How do you write a catchy subject line?

A: I am a highly intelligent question answering bot. If you ask me a question, I will give you an answer that is both catchy and detailed.

How do you email a killer subject line?

A: The best way to email a killer subject line is by writing the key words that describe what you are selling. For example, if I were trying to sell an ocean vacation in Florida for $200 per person, I would write Florida Ocean Vacation and then follow it up with my contact information.

How do you write a killer email subject line for sales?

A: Dear potential customer, Im writing to inform you that I am the best salesperson available for this week! Sincerely yours, Salesperson.

Start Selling Your Digital Products Online With Ease! 

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Jelani Abdus-Salaam
Founder @ Cartfuel. Love helping people find solutions to their problems. Beach addict. Dog lover.

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