How to Grow Your Email List: 20 Proven Strategies That Work

It’s 2025, and there is one thing we are sure about, it’s that content is still king. And when it comes to content, email marketing still reigns supreme. According to Forbes, 77% of B2B buyers still prefer email for communication. Also, 50% of consumers said they purchase from a marketing email at least once a month. This shows that with a high-quality email list, businesses can reach the right audience, deliver targeted messaging, and improve conversion rates. 

Unfortunately, many businesses struggle with low subscriber growth, poor lead quality, and ineffective conversion strategies that make it difficult to see visible results. A weak email list can lead to wasted budgets, missed opportunities, and disengaged audiences. 

If you’re looking for ways to elevate your email list-building game, you’ve come to the right place. In this guide, we’ll teach you how to grow an email list the right way.

 

What Is an Email List?

An email list is exactly what it sounds like: a list of email addresses collected by your business through lead generation efforts. These email addresses belong to people who are interested or potentially interested in your business. 

By opting in, subscribers receive updates on your brand, like promotions and events. Your email list gives you direct access to your audience’s inbox.

Types of email subscribers

An email list usually consists of different types of subscribers, each with unique levels of engagement:

• Prospects: Individuals who have shown interest but haven’t made a purchase yet. They may have signed up for a newsletter, downloaded a lead magnet, or interacted with your business in some way.
• Customers: People who have already made a purchase. You can use email marketing to send them order updates, special offers, or personalized emails.
• Loyal brand advocates: Highly engaged customers who regularly interact with emails, share content, and promote the brand. Once nurtured properly, these subscribers have the potential to become brand ambassadors, referral partners, and repeat customers.

How successful brands manage an email list

Effective businesses know how to maximize the benefits of their email list. Here are a few ways how they do this:

Sales and promotions

One of the most common uses of email marketing is for sales and promotions. Surprisingly, though, only about 24% of email marketers consider sales as their primary campaign objective, as reported by DMA.

Brand loyalty and relationship-building

Brands use their email lists to build relationships with their audience through content. DMA reported that around 16% of marketers prioritize this in email marketing strategies, using personalized content and incentives to enhance customer loyalty.

Lead generation and nurturing

Lead generation and nurturing are the most common use cases of email subscription lists. Dux-Soup’s B2B lead generation report found that 87% of marketers rely on email to guide subscribers through the customer journey.

Customer acquisition

Not all of a brand’s subscribers are customers, but the goal is to make them so. GetResponse reported that around 43.7% of brands send emails to get new customers or turn their existing subscribers into paying clients.

Win-back campaigns

It’s normal for former customers and prospects to lose interest in a brand in favor of a new hobby, priorities, or perhaps another brand. That’s why 29.3% of B2C and B2B brands use email marketing to re-engage their subscribers, according to GetResponse.

Customer engagement and retention

As the marketing adage goes, email is forever. This means that once someone subscribes, you can reach them anytime. That is, until they unsubscribe.

According to the Data & Marketing Association (DMA), most brands, approximately 72%, rely on email marketing efforts to keep subscribers engaged throughout the customer journey.

Why Grow Your Email List?

Since your subscriber list directly impacts your brand’s reach and engagement, you should focus on how to grow your email list. Naturally, a larger email subscription list means a broader audience you can connect with. 

Here are a few more reasons why you should build your email list:

Increased customer engagement

Did you know that email is still the first thing most people check in the morning? According to OptinMonster, more than half (58%) check their emails first, compared to just 14% for social media and 20% for search. 

As for actual email client engagement, an astounding 99% of email users check their inboxes daily, according to HubSpot. Salesforce reported that personalized emails have an open rate of 41%, while Facebook posts have an average engagement of only 0.063%, according to Rival IQ.

Higher sales conversions

Another awesome benefit of email list building is higher sales conversions. According to Litmus, the average ROI for every dollar spent on email is $36, making it incredibly cost-effective and lucrative.

To give you a better idea of the numbers, here is the actual and predicted revenue from emails:

Last year, emails all over the world generated $12.33 billion in revenue, according to Statista, and this number is expected to rise in the next few years. 

Brand loyalty and customer retention

In sales, getting a customer to buy a product or service is only the first step. A business won’t be able to thrive if it only has one-off customers, so it needs to focus on encouraging repeat purchases. Fortunately, email helps make that happen.

Consistently providing value, like exclusive offers or helpful content in your emails, is a great way to grow your email list while building trust and loyalty. Email is dubbed as the best channel for customer retention, with 56% of email marketers recognizing its effectiveness in sustaining customer engagement.

Proven Strategies to Grow Your Email List

Now that you know the benefits of email list building, let’s get to the good part. Backed by experience and data, these 20 strategies have helped us boost subscriber numbers for our clients and enhance their digital marketing campaigns.

1. Leverage pop-ups and exit-intent forms

Websites commonly use popups and exit-intent forms to capture emails. 

Pop-ups appear based on triggers like time on page, scroll percentage, or button clicks. They help capture leads, promote offers, or drive engagement.

Exit-intent forms detect when a user is about to leave the site (e.g., moving the cursor toward the browser’s close button) and display a targeted message to keep them engaged or collect their email.

When used incorrectly, pop-ups and exit-intent forms can be annoying and push visitors away. However, when used strategically as part of your list building tactics, they can be powerful tools that help you grow your email list.

Gamified popups, like the spin wheel shown above, are known to increase conversions by 40% compared to traditional popups, according to ProfileTree. 

To grow your email list and maximize conversions, follow these pop-up best practices:

• Right timing: Trigger pop-ups after a visitor spends some time on a page or scrolls 50% instead of just a few seconds of browsing.
• Right frequency: Limit pop-up frequency to avoid annoying users.
• Use clear and simple messaging: Offer incentives (e.g., discounts, exclusive content) in a straightforward, easy-to-understand manner.
• Make it user-friendly: Keep forms simple with minimal fields and an easy-to-close option.
• Target the right audience: Personalize offers based on your email sign-up landing page content and user behavior.

2. Create high-quality lead magnets

Lead magnets are resources you offer to your website’s visitors in exchange for their email. These can be reports, guides, checklists, or even webinars. Anything that your audience finds valuable can be lead magnets.

However, having a lead magnet doesn’t automatically guarantee email sign-ups. To boost conversions, your lead magnets should be highly relevant to your niche, directly address the audience’s needs and pain points, and provide real value.

Here are examples of lead magnets you can create for your brand:

 

Lead magnet type	Description	Best use case	Example
eBooks	In-depth, informative guides on a specific topic	Educating audiences, establishing authority	“The Ultimate Guide on How to Grow Your Email List”
Checklists	Simple, actionable step-by-step lists	Helping users complete tasks efficiently; a curated collection of the best resources	“10 Best Email Newsletter Platforms”
Guides	Detailed how-to content or tutorials	Providing expert insights, practical knowledge	“How to Grow Your Email List: A Beginner’s Guide”
Whitepapers	Data-driven reports or case studies	B2B marketing and demonstrating industry expertise	“How AI Is Transforming Digital Marketing: Trends and Strategies for 2025”
Webinars	Live or recorded video presentations	Engaging audiences and answering questions in real time	“Webinar: How to Build a 6-Figure Online Business”
Templates and swipe files	Pre-made documents or scripts that users can customize	Saving users time and streamlining tasks	“Email Marketing Swipe Files: 10 Proven Templates”

 

3. Use exclusive discounts and special offers

Offering discounts and special offers is an effective way to grow your email list. Promotional offers encourage visitors to take action. In fact, according to OptinMonster, 60% of consumers subscribe to a brand’s email list to access deals.

Take this example from Fossil. The watch company offers a $25 discount for anyone who signs up for their email newsletter, provided that they purchase at least $75 worth of products. 

With this, the shop not only encourages prospects to subscribe but also pushes them to purchase its products to claim the discount. 

4. Create a content subscription option

Prospects often ask, “What’s in it for me?” when visiting a website. One of the best ways to answer this question is by providing value through a free email subscription. You can offer an exclusive content series or special newsletters. As long as your prospects can see the clear benefits, they’re more likely to subscribe.

Best practices to grow your email list through subscriptions:

• Clearly state subscriber benefits (e.g., insider knowledge, special reports). Don’t give misleading information.
• Use simple sign-up forms with catchy CTAs.
• Offer content in various formats, like weekly insights/tips, articles, or behind-the-scenes updates.
• Use your email service provider to maintain a consistent schedule to build audience trust and engagement.

5. Run contests and giveaways to attract subscribers

If there’s anything people like, it’s getting things for free. That’s why contests and giveaways work so well for email list growth. 

Steps for a successful giveaway:

• Choose an attractive prize: Offer something valuable and relevant to your audience (e.g., freebies, exclusive access, or premium services).
• Set clear rules: Require email sign-ups. Consider additional actions like referring friends.
• Promote across channels: Use social media, website pop-ups, and email to maximize reach.
• Follow up: Send a welcome email and engage new subscribers with valuable content.

6. Personalize your email sign-up offers

Making offers more relevant to individual users strengthens your brand’s connection with visitors. Tailoring sign-up incentives based on behavior, interests, or past interactions, can make it easier to grow your email list. 

According to HubSpot, personalized calls to action (CTAs) are 202% more effective than generic ones. People are more likely to opt-in to a CTA saying “Get 25% off your first order when you sign up” than one that says “Sign up for exclusive discounts.”  

How to personalize email sign-up offers:

• Behavior-based offers: Show specific discounts based on browsing history.
• Geo-targeting: Offer location-specific deals, like free shipping in select regions.
• Returning visitor recognition: Display exclusive content or discounts to repeat visitors who haven’t subscribed.
• Dynamic content: Use AI to show personalized lead magnets, like eBooks or webinars relevant to visitors’ interests. 

The right newsletter platforms help businesses tailor email sign-up offers based on user behavior and interests. With advanced segmentation and automation, an email marketing platform enables businesses to deliver relevant, engaging content, increasing the likelihood of conversions.

7. Use AI chatbots to collect emails

AI chatbots are commonly found in live chat widgets on business websites for customer support or lead capture. 

Here are some best practices:

• Make conversations natural: Use a friendly, conversational tone.
• Trigger engagement at the right time: Trigger chatbots based on user behavior.
• Offer value upfront: Provide helpful content, exclusive discounts, or personalized recommendations.
• Keep it simple: Keep the chatbot’s language clear and concise.
• Seamless email collection: Integrate email sign-ups smoothly by offering incentives like free resources.
• Personalize responses: Leverage user data to tailor chatbot messages based on browsing history or previous interactions. 
• Enable human handoffs: If needed, allow users to connect with a human agent for more complex inquiries.
• Test and refine: Analyze chatbot performance and refine messaging based on user feedback.

8. Optimize your landing pages for conversions

Does your brand have a landing page aimed exclusively at getting people to subscribe? If not, then you’re missing out on potential subscribers.

If you do have a landing page but aren’t seeing results, it’s time to optimize it. Ask yourself these key questions to improve conversions:

1. Is my message clear? Do visitors quickly understand why they should sign up?
2. Is my CTA easy to see? Does the sign-up button stand out and encourage action?
3. Is my form simple? Am I only asking for the necessary details to make signing up easy?
4. Does my page build trust? Are there reviews, guarantees, or proof that my brand is reliable?
5. Is my page mobile-friendly? Does it load fast and look good on phones?
6. Are there any distractions? Is there anything that’s making it harder for visitors to sign up?
7. Have I tested different versions? Have I tried different headlines, buttons, or layouts?

Focus on three key factors: clear CTAs, a user-friendly design, and fast loading speed, especially on mobile. Remember, just a 1-second delay in your page loading speed can hurt your conversions by 7%, according to BigCommerce.

9. Add signup forms to high-traffic pages

Where there’s foot traffic, sales will follow. The same holds true for your website. Pages with more visitors are likely to attract more sign-ups to your email subscriber list.

After identifying your high-traffic pages, focus on strategically placing sign-up forms. Make sure your forms are easy to spot but not intrusive. You can place them on sidebars, headers, and inline content. Keep the design simple, the fields minimal (just the name and email will typically do), and the CTA clear and enticing. 

If you’re a business looking to maximize sign-ups and grow your email list, an email marketing agency can provide expert insights on optimizing form placement, messaging, and design. Agencies use A/B testing, behavioral data, and advanced tools to create high-converting email signup pages that seamlessly integrate with your website’s high-traffic pages.

10. Create and promote a referral program

Another surefire way to grow your email list is to create a referral program. To be effective, it must be well-structured and offer incentives that motivate current subscribers to invite others to join your list. 

TOMS has an awesome referral program like this. Its visitors receive 20% off their next purchase when they refer a friend, who also gets 20% off. With their smart referral program, everybody wins.

11. Collect emails at conferences and events

Live events like conferences can also help you grow your email list. Here are some effective strategies:

• Use QR codes & digital forms: Set up easy-to-scan QR codes linking to a sign-up page.
• Offer exclusive content: Give event attendees special access to eBooks, industry reports, or exclusive deals.
• Engage through contests: Require email sign-ups for entry. 
• Business cards & networking: Collect business cards and follow up with a personalized email.
• Booth sign-ups: Provide tablets or laptops so attendees can enter their email on the spot.

12. Leverage social media to capture emails

Social media is another highly effective way to grow an email list; it helps direct visitors to your website’s sign-up page. According to Omnify, 54% of users turn to social media to research products or subscription-based services, indicating a strong potential for social media to drive email conversions as well. To capitalize on this, consider strategies like targeted advertising campaigns, engaging organic content, and optimizing social media profiles.

HubSpot’s social media post is a good example of using social media to drive sign-ups. The company’s Facebook post offered stats on how marketers use AI and then mentioned a link to the free report in the comments.

13. Segment your email list for better engagement

Email list segmentation means dividing your subscribers into smaller groups based on specific criteria like demographics, interests, behavior, or engagement level. Through this email marketing strategy, you can send personalized and relevant content, which can help increase your open rates, click-through rates, and conversions in the long run.

Here are a few effective ways to grow your email list through segmentation:

• Demographics: Categorize subscribers by age, location, job title, or industry to tailor messaging.
• Behavior-based segmentation: Group users by past purchases, website activity, or email interactions for targeted recommendations.
• Interest-based segmentation: Use survey responses or engagement history to send relevant content.
• Lifecycle stages: Separate new leads from loyal customers to send timely, appropriate content.

Campaign Monitor reported that segmented email marketing campaigns can increase revenue by 760%, making segmentation pivotal to effective email marketing.

14. Integrate email sign-ups with your CRM

If you haven’t integrated your email sign-ups with your CRM yet, now’s the time to do so. By doing this, you ensure a seamless flow of subscriber data from your website to your CRM, minimizing errors and improving efficiency.

According to Capsule, 59% of organizations report enhanced close rates due to CRM integrations. Such integrations enable personalized communication and targeted campaigns that enhance customer engagement and retention. 

15. Leverage social proof to increase sign-up rates

Just like people are more likely to buy from brands with stellar reviews, visitors are also more likely to subscribe to your email list when they see positive reports and proof of your credibility. This is based on an experiment by VWO, a split-testing company, and WikiJob.

Placing as little as 3 testimonials on WikiJob’s sales page increased conversions by 34%. That’s how powerful social proof is, and that’s why they need to be part of your email list building strategy. In your email sign-up forms, make sure to display testimonials, show subscriber counts, or feature endorsements from influencers.

16. Optimize your sign-up forms for mobile

Optimizing for mobile is crucial since 62.54% of website traffic comes from smartphones, as of 2024. This is a huge jump from 31.16% in 2011, according to Statista.

Optimize for mobile and build your email list by:

• Using responsive design 
• Simplifying your forms by using fewer fields
• Ensuring a quick loading speed
• Testing regularly for errors

17. Use video content to attract subscribers

Video content is incredibly effective at sparking the audience’s attention. According to Forbes, viewers are 95% more likely to remember a message from a video than from reading text alone (10%).

Given its impact, using video content is an excellent way to grow an email list. To leverage video to gain more sign-ups, keep in mind the following:

• Create high-quality, valuable videos that are short and engaging.
• Include a clear CTA to urge viewers to take action.
• Experiment with different video formats (testimonials, behind-the-scenes, tutorials, etc.).
• Place videos strategically and use social media to direct more traffic to your videos.

Toggl, a time-tracking software company, has a video showcasing how its tool works, giving visitors an idea of its functionality. Then there’s a CTA to “Start tracking for free,” which requires the visitors to create an account so they can access the free timer. 

18. Use interactive content (polls, quizzes) to engage users

Interactive content, such as polls or quizzes, encourages visitors to engage with your content. Take Stitch Fix, for example. The brand offers a quick “style quiz” for its audience, which helps them understand their fashion preferences.

But before the visitors can take the quiz, the website asks for their emails. Since the visitors are interested in taking the style quiz, they’re likely thinking, “What’s there to lose?”

And just like that, they willingly share their email to get started with the quiz. 

Most websites with quizzes and polls capture emails by promising to send the results or personalized recommendations to visitors’ inboxes. It’s a great trade-off, where visitors enjoy a fun experience in exchange for their emails.

19. Leverage web push notifications for email sign-ups

Web push notifications are small messages that pop up on a user’s desktop or mobile device. Users only receive these notifications if they grant permission for websites to send them. 

Once enabled, these notifications can appear even when the user isn’t actively browsing the site. They’re great for alerts on sales or discounts and can also serve as reminders for users to sign up for your email list. 

Best practices to follow:

• Time your notifications strategically.
• Keep messages short and sweet.
• Personalize your message (e.g., “Jane, don’t forget your free guide! Get it here.”).
• Use a clear CTA and highlight incentives.
• Avoid overwhelming users with too many notifications.

20. Use A/B testing to optimize sign-up forms

Finally, perhaps one of the most important steps in growing your email list is A/B testing. Whenever you make changes, whether to your email copy or email list signup form, you should always split test to maximize conversions.

Key A/B testing tips:

• Elements: Determine what to test (headline, button, email copies, email signature).
• Variations: Design 2+ versions with one change each.
• Setup/tool: Use a tool to split traffic between versions.
• Length of test: Let it run long enough for reliable data (the bare minimum is 7 days, according to Neil Patel).
• Results analysis: Check conversion rates and statistical significance.
• Repetition and iteration: Continue testing other elements for ongoing improvement.
• Data: Base decisions on data, not assumptions.

Attract and Retain Customers with Innovative Email Marketing from NinjaPromo

Growing your email list and keeping subscribers interested can be tough. NinjaPromo makes it easier. We go beyond the basics by using advanced, personalized strategies tailored to your business requirements. 

At NinjaPromo, we work with you to understand your business and your audience. This way, you get more than just new subscribers; you build real connections with people. Our expert team leverages data-driven insights and innovative techniques to create high-converting email campaigns. We help turn your email list into a tool that brings in more business and consistently boosts your ROI.