Subject Line Tips That Increase Open Rates


12 min remaining

Would you believe that your email open rates can be doubled, or even tripled by using our TIPS email subject lines?

We have collected excellent examples and tips to get your subscribers to open and read your emails

This article will show you how to create compelling subject lines that your audience won’t forget in order to increase your email open rates .

Let’s talk about the importance of email subject lines in order to increase email open rates. Before we dive into the subject, let’s first define this term.

Let’s say you have just started to send emails to grow an email list. 

35% of people open emails based on the subject

69% mark emails as spam when they’re subjected.

Promote your products and services. It’s important to create strong emails that customers actually open.

47% marketers claim they test different subject lines to optimize their emails’ performance . It is important to think about what subject lines are the most creative, interesting, informative, and engaging in order to make the right choice. 

To collect leads, you can use the email finder or popups.

What makes an effective subject line?

Use subject lines that are clear, concise, simple, direct, and simple if you want people opening your emails. 

Just a second! This is not so simple.

Personalize your content, summarize great content in just a few words and make it engaging.

MailChimp conducted an email subject-line analysis. MailChimp found that subject lines with humor, visual pizzazz, and descriptive subject lines convert better.

Take a deep breath! We’re starting…

19 Tips for Creating Catchy Email Subject Lines

TIP 1: Trigger Call for Action

Action-oriented verbs should be included at the beginning of your subject line. This will increase open rates and improve click-through rates.

More information about CTAs can be found in our recipe: Convert more using a Clear Popup CTA based on Hick’s Law Psychology

These are perfect for email subject lines. It is very difficult to convince subscribers to open your email.

For instance, “Shop Now” can be a call to action. Another is “Find out What’s Inside”.

TIP 2: Keep it short

You should limit your subject lines to 50 characters. This can cause people to be scared.

Although you should not use sales language, it’s important to keep your brand clear. 

Studies have shown 55% of open emails on a mobile device . Subject lines can look great on a computer, but might not look as good on a smaller screen 

While most businesses are aware that email must be mobile-friendly for customers, they often forget to consider the subject line. Shorter subject lines will lead to higher open rates.

TIP 3: Create a sense urgency and scarcity

Jim Rohn said, “Without a sense of urgency, desire loses its value.” “

It should have a compelling subject line. Customers must be prompted by a compelling subject line.

Subject lines that contain words that indicate time sensitivity such as “urgent”, “breaking”, or “important” increase email open rates. 

Side note – This same factor can also be used to increase leads via email popups. To increase converts, use Urgency Scarcity and Exclusivity.

A limited-time offer that offers a discount, gift or reward for a purchase made by a buyer within a certain time period is a special deal. 

Customers often abandon their carts before they make the purchase. It is crucial to use urgency and scarcity with creative abandoned Cart subject lines.

Your audience may be more likely to share a deal that is only available for a limited time if you offer a unique deal. This can increase your audience’s engagement.

Do not tell anyone. ”

TIP 4: Have fun

If your subject line is funny, your subscribers are more likely to open your emails. Humor can make a big difference in terms of open rates as well as sales.

TIP 5: Generate Curiosity

If you use too many subject lines, you could be considered spam.

Answers come from questions. Refer to your customer’s name to be more specific. 

Sometimes, asking a question, promising something or simply saying something weird can make subscribers curious.

TIP 6: Personalize to Make Them Feel Special

An Experian Marketing Services study found that personalized email subject lines (which included subscriber names) boosted open rates by an average 29.3% across all industries.

Our inboxes are scanned first, then we filter spam and promotional emails.

It is fun to see which offers people receive. The first one wins! 

You can also use casual language to build intimacy with your audience.

Get to know your subscribers by learning about their hobbies, jobs, and preferences. Personalize your emails for each subscriber.

Your subscribers will feel more special if they feel valued and appreciated. This is the ultimate goal for all marketing efforts.

TIP 7: Write a Familiar Sender Name

Use a suitable sender name. Trust is essential with your subscribers.

“amelia@Kobe Digital.com” is a good example of an inviting sender name. Isn’t it?

Avoid using the ‘no reply’ sender name. You could be considered spam by others. In order to prevent that, never use something like that:”noreply@company.com. “

TIP 8: Use Relevant Emojis

The Experian report that emojis in subject lines can increase open rate by up to 45% according to .

Emojis can be used to build strong relationships with your subscribers. 

These top 15 emojis are sorted by their subject line appearances.

While these aren’t the best emojis, they are the most commonly used. You can use emojis in your email subject lines to express yourself.

Emojis should be related to the subject line of your email. For example, the emojis for “Pizza party this weekend!” can be used to clarify the purpose of your email. The “Springfield Elementary Parent Teacher Association newsletter” uses emojis that are not related to the subject.

TIP 9: Use controversial subject lines

If you’re confident in your audience’s perceptions, you can use controversial subject lines to attract attention.

  • Everyone is Gay: Social Media and Social Action
  • Your 5-year old is digitally smarter than most CMOs
  • Why your marketing is failing: Why it’s important to think locally

An unusual subject line can make you stand out and attract more people. 

TIP 10: Use numbers and lists

You’ve probably noticed that our blog emphasizes the importance of numbers.

Christopher Packham performed a MedicalXpress study. In a study, “Numerosity”, a primary visual property, was defined in terms of topological variables.

If you include numbers in your subject line, subscribers will be more inclined to learn about them. The subject line should be easy to understand and simple.

You can also write “Flash sale: 50% discount” instead of “50% Flash sale”.

Use numbers in your subject line to grab their attention. This gives the impression that your content has been created by you.

TIP 11: Don’t shout at people using your subject line

Many businesses still send emails with subject lines such as


It doesn’t work, unfortunately. It’s really disgusting…

People do not like being yelled at and subject lines that are too threatening can make people retch their noses. To get people’s attention, you must use human-like language.

Using upper-case letters in email subject lines can make you seem demanding, shouting, or desperate to get attention. Always capitalize the first letter of each word.

It will make you look insensitive or negligent if your email subject line is capitalized.

TIP 12: Make a Schedule, Be Relevant

Email lists are subscribed to by Customers who receive too many spam messages from other companies and will unsubscribe. 

Segmenting customers can be complicated if opt-in segments are included in your email subscription form. This allows you to classify subscribers according to their interests.

Use compelling headlines or topics to grab your subscribers’ attention.

It is important to set a time and frequency for your emails. This will help you keep your subscribers happy.

When is it best to send an email to someone? During the day is when you are most likely to receive an email notification from an alert person. It is very unlikely that this will happen at 3 AM.

This is a great way to find out the location of your subscribers so that you can determine their waking hours.

TIP 13: Keep your word.

Google’s search algorithm is data-driven. If you use misleading subject lines in your emails, your open rates will increase. However, your emails will end up in the spam folder.

Google stores complaint data about your subscribers. If they believe you, the risk of them being labeled spam increases. This is not something we want in email marketing.

Use precise subject lines. You should make your subject line interesting and attractive without being misleading.

Make false promises about opening an email. You will not get good results if you lie. 

TIP 14: Find out what your subscribers want

Asking your subscribers for their intentions is a great way to establish an emotional connection.

Asking them to imagine the future for their company or themselves. It is possible to ask questions about their lives or their plans for the future. People love to daydream about the future. With appropriate and emotionally charged subject lines, you can increase your email opening rate.

TIP 15: Impress your friends using the If-Then Subject line

You can use if-then subject lines in order to give your subscribers something of value. Make sure you offer something that is based upon the needs of your subscribers.

A powerful “if-then” statement must be relevant to your audience. Your customers should be able to see the “if” part of your statement and purchase your products.

“if/then” statements can be very powerful triggers for behavior modification or habit formation.

TIP 16: Use “You Can” Subject Line

Get to know your subscribers better by getting to understand their interests and past experiences. 

Once you have a clear understanding of your audience, you can create subject lines for emails that ask questions or remind them of the status quo. 

Superiority illusion is when people think they are more than average in all areas. Support your subscribers in reaching their goals.

TIP 17: Don’t miss any occasions

People will be open to receiving emails with interesting subject lines and smiles. People will smile and be curious about occasional subject lines.

TIP 18: Target Unsubscribers

Subscribers who fail to act (e.g. abandon cart, fail to purchase after the free trial), are unsubscribed from your email list

Retargeting subject lines that are effective can include overriding objections or adding something to sweeten your deal or simply stating that you have corrected your error.

An email marketing campaign can be created using the Winback technique for customer retention.

TIP 19: Test your Subject Lines

Always A/B test your emails to find the best subject lines for your readers. A/B testing is essential for email marketing success.

You must define success before you can conduct an A/B testing. Take into account your historical open rates to determine how much improvement you would like.

A lot of email software supports A/B tests. If your email software doesn’t support these features, you can manually create A/B campaigns.

About the author

Kobe Digital is a unified team of performance marketing, design, and video production experts. Our mastery of these disciplines is what makes us effective. Our ability to integrate them seamlessly is what makes us unique.