Email Marketing: Writing Your Subject Lines to Increase Open Rates

Mar 15, 2021
Email Marketing


Welcome to Indigo Local Marketing, your go-to resource for all things related to digital marketing! In this article, we will dive deep into the world of email marketing and discuss the importance of crafting compelling subject lines to increase open rates. Whether you're a business owner or a marketer, understanding the power of an impactful subject line is crucial for driving engagement and getting your emails noticed. Let's get started!

The Importance of Subject Lines in Email Marketing

Subject lines play a critical role in determining whether your email gets opened or ignored. Think of them as the gateway to your email content. A well-crafted subject line can entice recipients to click and explore further, while a lackluster one may lead to your email being sent straight to the trash folder.

With the average person receiving numerous emails daily, it's essential to make your subject lines stand out from the crowd. This is where your creativity and strategic thinking come into play. By understanding your audience and incorporating persuasive elements, you can significantly improve your open rates and ultimately drive more conversions.

Tips for Writing Effective Subject Lines

Now that we understand the significance of subject lines, let's delve into some expert tips and techniques to help you craft compelling and attention-grabbing subject lines for your email campaigns:

1. Keep it Short and Snappy

When it comes to subject lines, brevity is key. Most email clients show only a limited number of characters, so it's important to convey your message concisely. Aim for subject lines that are 50 characters or less to ensure they are fully visible and make an impact. Use powerful and attention-grabbing words to capture the recipient's attention quickly.

2. Personalization is Key

Personalizing subject lines can significantly increase open rates. By addressing the recipient by name or using other personalized elements, you create a sense of connection and relevance. Make use of your email marketing platform's personalization features to dynamically insert recipient names or other relevant information into the subject line.

3. Convey Value and Urgency

People are more likely to open emails that offer them something valuable or create a sense of urgency. Use your subject lines to highlight exclusive offers, limited-time promotions, or time-sensitive content. By creating a sense of FOMO (fear of missing out), you can increase the sense of urgency and entice recipients to open your email right away.

4. A/B Test Your Subject Lines

Testing different subject lines can help you understand what resonates best with your audience. Split your email list into segments and send different subject lines to each segment. Analyze the open rates and engagement metrics to identify which subject lines perform the best. Continually refine and optimize your subject lines based on the data you gather.

5. Avoid Spam Trigger Words

Sending emails that end up in the spam folder is the last thing you want. Be cautious of using words or phrases that are commonly associated with spam emails. These can trigger spam filters and prevent your emails from reaching the recipient's inbox. Review your subject lines and ensure they do not contain any spam trigger words to improve deliverability.

6. Create a Sense of Curiosity

Curiosity is a powerful motivator. Craft subject lines that pique the recipient's interest and make them curious to know more. Use teasers, intriguing questions, or cliffhangers to create anticipation and drive recipients to open your emails. However, make sure your email content delivers on the promises made in the subject line to maintain trust and credibility.


Writing effective subject lines is a skill that can significantly impact the success of your email marketing campaigns. By following the tips and techniques outlined in this article, you can increase open rates, engage your audience, and drive more conversions. Remember to continually test and optimize your subject lines to keep up with evolving preferences and trends in your target market. At Indigo Local Marketing, we are passionate about helping businesses thrive in the digital landscape. Contact us today to learn more about our comprehensive digital marketing services.