Back to blog

How to write compelling email subject lines

November 18, 2023 | Jimit Mehta

In today's digital age, email has become an integral part of our lives. Whether it's for personal communication or business correspondence, we rely heavily on email to convey our messages. But with the sheer amount of emails we receive every day, it can be challenging to stand out in a crowded inbox. This is where a compelling email subject line can make all the difference. The subject line is your first impression, the make-or-break moment where the recipient decides whether or not to open your email. In this article, we'll explore the art of writing compelling email subject lines and share some tips and tricks to help you capture your recipient's attention and increase your email open rates. So, whether you're trying to promote your business or simply connect with your friends and family, read on to learn how to craft subject lines that are irresistible and impossible to ignore.

The Importance of a Compelling Email Subject Line

In today's world, we're bombarded with a ton of emails, and it's easy for our inboxes to get cluttered with messages we don't want to read. This is where a compelling email subject line can make all the difference. The subject line is the first thing that your recipient sees, and it plays a crucial role in determining whether or not they'll open your email. If your subject line doesn't grab their attention and entice them to read further, your email will likely be ignored or even deleted.

A compelling email subject line is important because it serves as your first impression to the recipient. It can set the tone for the rest of your email and establish your credibility, authority, and professionalism. A great subject line can also help you stand out in a crowded inbox, and it can even improve your email open rates. In fact, studies have shown that emails with personalized subject lines are 26% more likely to be opened, and subject lines with numbers can increase open rates by 15%.

On the other hand, a poorly written subject line can have the opposite effect. If your subject line is boring, vague, or uninformative, your recipient may assume that your email is not important and choose to ignore it. In some cases, a bad subject line can even make your email look like spam, and it can lead to your message being filtered out or marked as junk mail.

In short, the importance of a compelling email subject line cannot be overstated. It can make the difference between your email being read and your message being ignored. So, it's important to take the time to craft a subject line that is interesting, informative, and relevant to your recipient. With a great subject line, you can increase your chances of getting a response and achieving your desired outcome.

Personalize every website interaction
Try for free

Understanding Your Audience and Purpose

When it comes to writing compelling email subject lines, one of the most important things to keep in mind is your audience and purpose. The subject line you write should be tailored to the specific recipient and the goal you're trying to achieve with your email.

Understanding your audience means knowing who you're writing to and what their interests, preferences, and pain points are. For example, if you're emailing a potential customer, you might want to focus on the benefits of your product or service and how it can solve a problem they're facing. On the other hand, if you're emailing a coworker, you might want to focus on the specific task or project you're working on and how your email can help move things forward.

In addition to understanding your audience, it's also important to be clear about the purpose of your email. What do you want the recipient to do after reading your message? Do you want them to take a specific action, like scheduling a meeting or making a purchase? Or are you simply trying to provide them with information or share an update? By being clear about your purpose, you can craft a subject line that conveys your message in a concise and compelling way.

Overall, understanding your audience and purpose is key to writing effective email subject lines. By tailoring your subject line to the recipient and the goal you're trying to achieve, you can increase the chances of your email being opened and getting the response you're looking for.

How to Keep It Short and Sweet

One of the most important aspects of writing a compelling email subject line is keeping it short and sweet. In today's fast-paced world, people are busy and have a limited attention span, so a long, convoluted subject line is likely to be ignored. That's why it's important to keep your subject line as concise and to the point as possible.

The ideal subject line length can vary depending on the situation, but generally, it's recommended to keep it under 50 characters. This will ensure that the recipient can read the entire subject line without it getting cut off, whether they're using a desktop computer or a mobile device.

To keep your subject line short and sweet, it's important to focus on the most important information you want to convey. Try to use clear, descriptive language that accurately reflects the content of your email. Avoid using filler words or unnecessary details that don't add any value to the subject line.

One effective technique for keeping your subject line short is to use action-oriented verbs and power words that create a sense of urgency or excitement. For example, using words like "urgent," "important," or "limited time" can create a sense of urgency and encourage the recipient to open your email right away.

In summary, keeping your email subject line short and sweet is essential to getting your message across and grabbing the recipient's attention. By focusing on the most important information, using clear language, and incorporating action-oriented words, you can create a subject line that's both concise and compelling.

Using Numbers, Questions, and Personalization

When it comes to writing compelling email subject lines, there are several techniques you can use to make your message stand out. Three of the most effective techniques are using numbers, questions, and personalization.

Using numbers in your subject line can be a great way to grab the recipient's attention and add credibility to your message. For example, you might use a number to highlight a statistic or a benefit of your product or service. Using numbers can also help to break up the text and make the subject line easier to read.

Another effective technique is to use questions in your subject line. This can be a great way to engage the recipient and encourage them to open your email to find out the answer. When using questions, it's important to make sure that the question is relevant to the recipient and the purpose of your email.

Finally, personalization can be a powerful technique for creating a compelling subject line. By including the recipient's name or other personalized information, you can create a sense of connection and relevance that can increase the likelihood of your email being opened. Personalization can also be used to tailor your subject line to the recipient's interests, preferences, or location.

When using these techniques, it's important to use them in moderation and make sure that they're relevant to the recipient and the purpose of your email. Overusing numbers or questions can make your subject line look spammy or gimmicky, while overusing personalization can come across as creepy or intrusive.

In summary, using numbers, questions, and personalization can be effective techniques for creating compelling email subject lines. By using them in a relevant and appropriate way, you can increase the chances of your email being opened and achieving your desired outcome.

The Power of Urgency and Scarcity

Two of the most powerful psychological motivators when it comes to marketing are urgency and scarcity. The sense that something is both important and limited can create a strong drive to take action, and you can use these motivators in your email subject lines to create a sense of urgency or scarcity.

Urgency can be created by making your subject line time-sensitive. For example, you might use phrases like "Last chance" or "Today only" to encourage the recipient to take action quickly. By creating a sense of urgency, you can increase the perceived value of your email and encourage the recipient to open it right away.

Scarcity, on the other hand, can be created by highlighting that something is in limited supply or high demand. For example, you might use phrases like "Limited availability" or "Going fast" to create a sense of scarcity around your product or service. By doing this, you can increase the perceived value of your offer and encourage the recipient to take action before it's too late.

It's important to use urgency and scarcity in your email subject lines in a responsible and truthful way. Don't create a false sense of urgency or scarcity, as this can damage your credibility and make it less likely that the recipient will trust you in the future. Instead, be honest and transparent about the urgency or scarcity of your offer.

In summary, the power of urgency and scarcity can be harnessed to create compelling email subject lines that encourage the recipient to take action. By creating a sense of urgency or scarcity in your subject line, you can increase the perceived value of your offer and motivate the recipient to open your email and take the desired action.

Avoiding Spam Traps and Misleading Subject Lines

When it comes to writing email subject lines, it's important to avoid techniques that might trigger spam filters or mislead the recipient. This is because using spammy or misleading subject lines can damage your credibility, reduce the effectiveness of your email marketing, and even lead to legal consequences.

One thing to be aware of is spam traps. These are email addresses that are set up by internet service providers (ISPs) and email security companies to catch spammers. If your email ends up in a spam trap, this can harm your sender reputation and make it more likely that your emails will be marked as spam in the future. To avoid spam traps, make sure that your email list is up-to-date and that you're only sending emails to people who have opted in to receive them.

Another thing to avoid is misleading subject lines. This might include using false promises, exaggerated claims, or clickbait headlines that don't accurately reflect the content of your email. While this might temporarily increase your open rates, it can harm your credibility and make it less likely that the recipient will trust you in the future. To avoid misleading subject lines, make sure that your subject accurately reflects the content of your email and that you're delivering on any promises you make.

In addition, be mindful of other common spam triggers, such as using all caps, using certain trigger words (such as "free" or "urgent"), or using excessive punctuation. Make sure that your subject line is clear, concise, and relevant to the recipient, and avoid any techniques that might make your email look like spam.

In summary, avoiding spam traps and misleading subject lines is an important part of creating effective email subject lines. By following best practices, staying up-to-date with spam filter algorithms, and being mindful of the recipient's needs and preferences, you can create subject lines that not only get your email opened, but also help to build trust and credibility with your audience.

Testing and Measuring Your Email Subject Lines

Creating compelling email subject lines can be challenging, and it's not always easy to know what will resonate with your audience. That's why it's important to test and measure your email subject lines to see what works and what doesn't.

Testing your email subject lines involves sending out two or more versions of your email to a small sample of your audience, with each version having a different subject line. You can then compare the open rates of each email to see which subject line performed better. By testing your subject lines in this way, you can get a sense of what types of subject lines are most effective for your particular audience.

In addition to testing, it's also important to measure the performance of your subject lines over time. This can help you to identify trends, patterns, and areas for improvement. For example, you might notice that subject lines with questions tend to perform better than subject lines without questions, or that subject lines with emojis tend to perform better on mobile devices.

To measure the performance of your subject lines, you can use email marketing software that tracks metrics like open rates, click-through rates, and conversion rates. This will give you a sense of how effective your subject lines are at driving engagement and conversions.

By testing and measuring your email subject lines, you can continually improve your email marketing efforts and ensure that you're delivering content that resonates with your audience. This can help you to build stronger relationships with your subscribers, increase your open and click-through rates, and ultimately drive more conversions and revenue for your business.

In summary, testing and measuring your email subject lines is an important part of creating effective email marketing campaigns. By being willing to experiment and try new things, and by using data to inform your decisions, you can create subject lines that capture your audience's attention and inspire them to take action.

Tips for Writing Effective Subject Lines in Different Situations

Writing effective email subject lines is an important skill for anyone who wants to succeed in email marketing. However, the best practices for writing subject lines can vary depending on the situation, audience, and purpose of the email. Here are some tips for writing effective subject lines in different situations:

  1. Promotional emails: If you're sending a promotional email, such as a sales announcement or a discount offer, make sure your subject line clearly communicates the offer or benefit. Use numbers, urgency, and personalization to make the subject line more compelling.

  2. Newsletters: When sending a newsletter, use a subject line that highlights the most interesting or valuable piece of content in the newsletter. You can also use questions or teasers to entice the reader to open the email.

  3. Event invitations: If you're inviting people to an event, make sure your subject line clearly communicates the date, time, and location of the event. You can also use personalization to make the subject line more engaging.

  4. Follow-up emails: If you're sending a follow-up email, such as a reminder or a request for a meeting, use a subject line that clearly communicates the purpose of the email. Use urgency and personalization to make the subject line more effective.

  5. Transactional emails: Transactional emails, such as order confirmations or shipping notifications, should have subject lines that clearly communicate the purpose of the email. Use personalization and order-specific details to make the subject line more relevant to the recipient.

In general, the key to writing effective subject lines in different situations is to be clear, concise, and relevant to the recipient. Use techniques like personalization, urgency, and questions to make the subject line more engaging, but be careful not to use misleading or spammy tactics that might damage your credibility. By tailoring your subject lines to the situation, audience, and purpose of your email, you can create emails that are more effective at driving engagement and conversions.

Examples of Compelling Email Subject Lines

Crafting a compelling email subject line can be challenging, but fortunately, there are plenty of examples out there to inspire you. Here are some examples of compelling email subject lines that can help you create effective subject lines for your own email campaigns:

  1. "Limited time offer: 50% off everything!" - This subject line creates a sense of urgency and scarcity, encouraging the recipient to open the email and take advantage of the offer before it expires.

  2. "How to [solve a problem the reader may have] in just 5 minutes" - This subject line promises a quick and easy solution to a problem the reader may be experiencing, making it more likely that they will open the email to learn more.

  3. "Don't miss out on this exclusive event!" - This subject line creates a feeling of exclusivity, encouraging the reader to open the email to learn more about the event and how to participate.

  4. "Get [desirable outcome] with these [number] tips" - This subject line promises a desirable outcome and provides a number of tips to help the reader achieve it, making it more likely that they will open the email to learn more.

  5. "Hey [recipient's name], check out these [product/service] deals just for you!" - This subject line uses personalization to create a sense of intimacy and relevance, making it more likely that the recipient will open the email and take advantage of the deals.

In general, the most effective email subject lines are those that create a sense of urgency or scarcity, promise a desirable outcome or solution, use personalization to create a sense of relevance and intimacy, and are concise and to the point. By studying examples of compelling email subject lines and adapting them to your own email campaigns, you can improve the effectiveness of your email marketing efforts and drive more engagement and conversions.

Final Thoughts and Takeaways

In conclusion, crafting compelling email subject lines is an essential skill for anyone who wants to succeed in email marketing. A well-crafted subject line can make the difference between an email that is opened and acted upon, and one that is ignored or deleted.

By understanding your audience and purpose, keeping your subject lines short and sweet, using numbers, questions, and personalization, creating a sense of urgency and scarcity, avoiding spam traps and misleading subject lines, and testing and measuring your subject lines, you can create subject lines that are more effective at engaging your audience and driving conversions.

It's important to remember that there is no one-size-fits-all approach to writing effective email subject lines. The best practices can vary depending on the situation, audience, and purpose of the email. By adapting your subject lines to the specific situation, audience, and purpose of your email, you can create subject lines that are more relevant and engaging to the recipient.

Finally, it's important to test and measure the effectiveness of your subject lines over time, and to make adjustments based on the results. By continually refining and improving your subject lines, you can improve the effectiveness of your email marketing campaigns and drive more engagement and conversions.

So, put these tips and best practices into practice and start crafting compelling email subject lines that drive engagement and conversions for your business!

Wrapping up

Crafting compelling email subject lines is an essential part of any successful email marketing campaign. A well-crafted subject line can make the difference between an email that is opened and acted upon, and one that is ignored or deleted. In this article, we've covered a range of tips and best practices to help you write more effective email subject lines.

We began by discussing the importance of understanding your audience and purpose, and how this can inform the content and tone of your subject lines. We then explored the importance of keeping subject lines short and sweet, and the use of numbers, questions, and personalization to create more engaging subject lines.

Next, we discussed the power of urgency and scarcity in creating a sense of FOMO (fear of missing out) and encouraging recipients to take action. We also talked about the importance of avoiding spam traps and misleading subject lines, and how to test and measure the effectiveness of your subject lines over time.

Finally, we provided some examples of compelling email subject lines that can serve as inspiration for your own campaigns. By putting these tips and best practices into practice, you can craft subject lines that are more engaging, relevant, and effective at driving engagement and conversions.

Want to personalize your emails and landing pages? Try Markettailor for free.


Related posts

The dos and don'ts of email list building

Email marketing is one of the most effective ways to connect with your audience and grow your business. Whether you're a small startup or a well-established brand, building an email list is essential. An email list is a collection of email addresses from individuals who have shown interest in your...

Read more

The importance of keeping your email list up to date

We've all been there - you sign up for a newsletter or make a purchase online, and suddenly your inbox is flooded with irrelevant emails that you have no interest in. It's frustrating, it's annoying, and it's a clear indication that the company behind the emails isn't keeping their email list up to...

Read more