How to write catchy email marketing subject lines?


Unlock the ultimate messaging system that can accelerate your business relationships and sales!

Emails take part in your daily activities; whether you send or receive messages from colleagues or send updates about your products or services, hundreds of emails fill your inbox daily. So, how is email still essential to promote your brand and building relationships?

It’s all about writing the right message to the right people!

Email marketing has proven to be significant during all the stages of a marketing funnel – in 2021 alone, the number of worldwide email users was about 4 billion, which will increase to 4.6B users worldwide in 2025.

What makes an email eye-catching or exciting? How can you make your open rate increase by keeping your contacts interested? Today we’ll dive into an email’s anatomy and underline its most crucial element and how you can use it to your advantage.

The anatomy of an email

Before writing your emails for your sequences or campaign, it’s crucial to understand their anatomy.


People see these elements as necessary to establish trust; if your email lacks one or more, your message might end in junk mail. Here are those essentials:

  • The message header – contains the sender’s and recipient’s email addresses, and the subject line
  • The message body – includes the content of the message
  • The message signature – an appended block of text that contains the sender’s name and content information

All of these are a must when sending an email. However, it would be best to focus on the header, specifically your subject line.

email subject lines

What is a subject in an email, and why is it important?

The subject line is a single line of text in an email that people see when they receive your message.

It’s important because it’s the first thing they’ll notice in a vast list of subject lines – and it may be the difference between getting your email opened or sent straight to the trash can.

How can you make yours stand out?

It’s all about understanding your contact’s context. For example, if your contact subscribed to your newsletter, you should optimize your subject line that clarifies why they are getting that email and for what purpose.

If your subject line has any other information unrelated to your newsletter (like the prices of your service), your contacts will think it’s a spam email. So, keep your subject line consistent based on their actions.

Besides considering your contact’s context, include keywords and phrases with which your connection is familiar – like the copy included on your website or landing page.

Additionally, be human. Your email will likely be overlooked if you send a technical subject line with complex or formal language. Instead, include an emoji (if possible), use a friendly tone, and don’t be afraid to use humor once in a while. All of these are a must when sending an email. However, it would be best to focus on the header, specifically your subject line.

5 examples of email-opening subject-lines

#1 Cut it down – use no more than 40 characters or five to seven words.

Yes: Thanks for subscribing! Here’s your gift. ????

No: Hey, you subscribed to our newsletter a couple of minutes ago. We have a special welcome gift just for you!

#2 Avoid a spammy tone – keep the salesperson persona away from your subject lines.

Yes: Digital marketing: does it help?

No: Digital marketing services, starting at $$$$!

#3 Make an announcement – it’s ok to shout out about your company’s/employee’s wins or special events.

Yes: The employee of the month award goes to…

No: Visit us at

#4 Ask a question – be careful with click-baiting your contacts, and use open questions in a fun way that wakes up curiosity.

Yes: Have you seen this social media trend? ????

No: Hey, your payment is overdue?! ????

#5 Be unique – use your brand’s tone of voice and keep your audience top of your mind to craft memorable messages.

Yes: “Finally! An honest marketing agency, BS-free!” ????

No: At Company XY, we’ve been providing 47 years of great customer service. Schedule a consultation today.

Final Thoughts on email subject-lines

Craft your subject lines carefully. Think about them as the first ingredient of an email – too much or too little will make the entire message fail. Instead, it needs to have the exact words and context to work.

We guarantee you’ll take quite some time writing these instead of the body message, but it’s worth it. Your entire email campaign or sequence success depends on those few lines of text. So, make the best of it!

If you want to know more about emails and how they work using drip campaigns, visit our blog post by clicking here.

Make sure to comment and share this post if you found it helpful – we’d appreciate it! See you at our next entry.

Scroll to Top