Crafting an effective email subject line is an essential skill, whether you’re in marketing, customer service, or simply trying to improve your everyday communication. A well-written subject line can make the difference between an email being opened or ignored. Here are some tips to help you create subject lines that capture attention and encourage engagement.
1. Keep It Short and Sweet
A concise subject line is more likely to be read, especially on mobile devices where screen space is limited. Aim for around 6-10 words or 40-50 characters to ensure clarity and impact.
2. Be Clear and Specific
Avoid vague or overly generic subject lines. Instead, clearly state the purpose of your email. For example, instead of writing “Meeting Update,” opt for “Meeting Rescheduled to Friday at 3 PM.”
3. Use Actionable Language
Encourage your recipient to take action by using strong, actionable words. Phrases like “Join Us for a Webinar,” “Claim Your Discount Today,” or “Confirm Your Attendance” make it clear what the email entails.

4. Personalisation Works
Including the recipient’s name or relevant details can make an email feel more tailored and engaging. For instance, “Emma, Your Exclusive Offer Inside” is likely to draw more attention than a generic message.
5. Create a Sense of Urgency
Encouraging a timely response can increase open rates. Phrases such as “Limited Spots Available,” “Offer Ends Tonight,” or “Last Chance to Register” can create a sense of urgency without being overly pushy.
6. Avoid Spam Triggers
Certain words and phrases can cause your email to be flagged as spam. Avoid excessive use of capital letters, multiple exclamation marks, and overly promotional language like “Free Money” or “You Won’t Believe This!”
7. A/B Test Your Subject Lines
If you’re sending emails to a large audience, consider testing different subject lines to see which performs better. A/B testing can help refine your approach and improve engagement over time.

8. Match the Tone to Your Audience
A formal business email requires a different tone than a friendly newsletter. Adjust your language based on your audience to ensure your message resonates with them.
9. Ask a Question
Engage your reader’s curiosity by posing a question. For example, “Are You Making These Email Mistakes?” or “Want to Save 20% on Your Next Purchase?” can encourage recipients to open the email to find out more.
10. Avoid Clickbait
While it’s tempting to use sensational subject lines, misleading your audience can damage trust and lead to high unsubscribe rates. Make sure your subject line accurately reflects the content of the email.
Final Thoughts
The subject line is often the first impression your email makes, so it’s worth spending time to craft one that is clear, compelling, and relevant. By following these tips, you can improve your email open rates and ensure your messages reach the right audience.
What are your favourite strategies for writing subject lines? Share your thoughts in the comments!