How to Write Email Subject Lines That Get Clicked
Table of Contents
- Introduction
- Why Subject Lines Matter in Email Marketing
- Using Curiosity to Capture Attention
- Why Personalisation Matters in Email Marketing
- Creating Urgency and Scarcity for Higher Opens
- Balancing Clarity and Creativity in Email Subject Writing
- Short Subject Lines That Drive Engagement
- Testing and Optimising Subject Lines with Data
- Internal Linking Strategies in Email Marketing
- Kantha Digital Expertise in Email Marketing
- Conclusion
- FAQs
1. Introduction
Your email subject line is the first impression you make on a subscriber. It determines whether your carefully crafted message will be opened or ignored. In the competitive digital space of 2025, subject lines must be strategic, engaging, and personalised.
At Kantha Digital, we specialise in building effective Email Marketing strategies that connect brands with their audience.
2. Why Subject Lines Matter in Email Marketing
The subject line is the gateway to your content. Even the most valuable email will not perform if the subject fails to capture attention. Strong subject lines:
- Boost open rates and click throughs
- Build curiosity and interest
- Strengthen brand voice and trust
Email campaigns succeed when subject lines are treated as a core element of the strategy.
3. Using Curiosity to Capture Attention
Curiosity is a proven psychological trigger. Subject lines that leave the reader wanting more often result in higher opens. Examples include:
- “You won’t believe what we discovered today”
- “A simple trick to boost your sales”
The key is to spark interest without misleading the audience.
4. Why Personalisation Matters in Email Marketing
Subscribers engage more with content that feels personal and relevant. AI-powered tools make it possible to:
- Insert the recipient’s name or location
- Suggest products based on previous purchases
- Adapt subject lines to user behaviour
Personalisation can increase open rates by 20 to 30 per cent, making it essential in modern campaigns.
5. Creating Urgency and Scarcity for Higher Opens
Urgency pushes readers to act immediately. Scarcity creates a fear of missing out. Subject lines with these elements often perform well:
- “Last chance to save on your favourite product”
- “Only 3 spots left for our webinar”
But marketers must use urgency responsibly to avoid overuse or loss of trust.
6. Balancing Clarity and Creativity in Email Subject Writing
A subject line should be creative enough to stand out but clear enough to communicate the value inside. Tips include:
- Avoid jargon that confuses readers
- Use powerful yet simple words
- Align subject lines with the actual email content
At Kantha Digital, we help brands find the perfect balance between clarity and creativity for impactful campaigns.
7. Short Subject Lines That Drive Engagement
With mobile usage dominating, short subject lines are more effective. Research shows that subject lines under 50 characters improve readability and click rates.
Examples:
- “Your exclusive deal is here”
- “Time to refresh your strategy”
Short lines also ensure visibility across devices, keeping your message clear and accessible.
8. Testing and Optimising Subject Lines with Data
Even great subject lines need testing to maximise performance. Marketers can use:
- A/B testing to compare variations
- Open rate analysis for trend tracking
- AI insights for predicting engagement
Continuous testing ensures subject lines evolve with audience behaviour and preferences.
9. Internal Linking Strategies in Email Marketing
Subject lines are just the start. To enhance user experiences, internal linking within emails is crucial. For example:
- Directing readers to Content Marketing services
- Linking to SEO strategies to increase engagement
Smart linking not only guides readers but also strengthens brand authority.
10. Kantha Digital Expertise in Email Marketing
At Kantha Digital, we design data-driven campaigns where every subject line, design, and call to action is optimised for results. From personalisation to automation, we ensure emails:
- Grab attention with strong subject lines
- Engage with meaningful content
- Convert with strategic calls to action
Discover more about our Email Marketing expertise to elevate your campaigns.
11. Conclusion
The art of writing email subject lines that get clicked lies in combining curiosity, personalisation, urgency, and clarity. In 2025, businesses that master subject line strategies will see higher engagement, stronger relationships, and better ROI.
At Kantha Digital, we help brands craft subject lines that capture attention and drive conversions. Learn more about our Email Marketing solutions and transform your email campaigns into powerful growth tools.
12. FAQs
Q1: What is the ideal length of an email subject line?
A1. Between 30 and 50 characters for mobile friendliness and clarity.
Q2: Should I use emojis in subject lines?
A2. Yes, but sparingly. Emojis can boost visibility, but must stay relevant to the message.
Q3: How often should subject lines be tested?
A3. Regular A/B testing is recommended for every major campaign to maximise performance.
Q4: Do personalised subject lines always perform better?
A4. Generally, yes, but effectiveness depends on audience preferences and segmentation.
