Nothing is easier than opening an inbox. That is one of the many reasons why email is such a valuable marketing tool. As long as the subject line is interesting, readers will be likely to give the content a cursory glance. This is a guide to writing powerful subject lines for your emails.
Email Campaign Statistics
Email continues to be an effective part of a digital marketing campaign. Based on email marketing statistics reported on HubSpot: - Roughly four billion people use email daily. By 2025, that number is expected to climb to 4.6 billion users.
- Every day, greater than 306 billion emails are sent and received.
- Email has one of the highest ROIs of all marketing efforts. Marketers can expect an impressive $36 for every $1 spent.
- Over the last 12 months, 77% of marketers report seeing an increase in email engagement.
According to Statista, email marketing revenue is expected to reach nearly $11 billion by the end of 2025. Types of Email Marketing Campaigns

To maximize ROI, a variety of email types can be employed.
Surveys
Surveys give insight into customers’ needs and preferences. They allow shoppers to evaluate products or services and can be used to better understand and sell to the target audience. The allure of the survey email leads to higher response rates, better feedback, and engagement.
Example: Tell us how we did.
Sales
Sales emails introduce products or services to potential customers as business outreach. They should pique the interest of the reader without being overbearing or demanding, but short and enticing. The goal is to have the customer make a purchase or at least, want more information. These emails can foster relationships and increase brand loyalty.
Example: We’re contacting you at (Referral)’s suggestion.
Promotions
Promotional emails prompt customers to purchase and complete an order within the email without having to open another tab. It makes the probability of a purchase higher, leading to an increase in revenue.
Example: Get 50% off today only.
Networks
Networking emails offer a convenient way to meet colleagues in the same area or across the state or country. They make establishing relationships possible when in-person networking opportunities are limited or nonexistent.
Example: Hello (name), I’d love to collaborate with you.
Recruiting
Hiring managers and career recruiters send recruitment emails to potential job candidates to alert them to job offers. Emails include specific elements that help build rapport with job-seekers to get them interested in current job openings.
Example: Amazing job opportunity inside!
For all marketing emails, personalization leads to more clicks. Names should be included when writing subject lines for your emails.
5 Things Your Subject Lines Must Include
Catching readers’ attention and getting a better opening rate is the goal of a good subject line. When you write subject lines for your emails, remember to include the following:
- Hook – emotions play a major role when it comes to taking action, so a good subject line will hook the reader into opening the email.
- Relevance – tips, tricks, and how-tos add relevance to emails.
- Sense of Urgency – a time limit included in a subject line motivates readers to click on an email.
- Sense of Fun – emails containing fun, catchy, and entertaining subject lines are more likely to be opened.
- Call to Action – a subject line is more effective if it tells readers what they need to do.
Readers must be intrigued enough to open emails.
Begin Building Leads with Your Email Subject Lines
Because of its ROI, cost-effectiveness, and ease of use, email marketing are essential aspects of growing an online business. NameSilo provides valuable information for people who are interested in quickly starting their own business or growing it to the next level of profitability. Contact us to learn more about how we can help with domain names for your website, hosting, security, API, email plans, and more.