10 Best List-Building Tools to Scale Your Business

Building an email list for any business can’t be overstated. You know the importance of list size if you do email marketing campaigns or outreach.

Building your list from scratch can be difficult and time-consuming, especially if you aren’t a well-established brand.

Having a mailing list to do email marketing is a critical part of establishing an online presence.

Email lists should be treated as projects themselves since they are challenging and require planning. So we gathered a list of the best email list-building software providers and free and paid options.

How Do You Build an Email List?

The process of building an email list of subscribers is called list building. You can engage with a broader audience, increase conversions from email marketing campaigns, and grow your brand awareness when your list grows. 

Aside from organic growth, there are two main approaches to list building: paid acquisition and organic growth. Your content marketing and outreach efforts should direct your audience to the sign-up form on your website for organic growth. 

On the other hand, paid acquisition involves using tools like Facebook Ads and Google Adwords to target customers and subscribers who fit specific criteria, such as demographics, interests, etc.; together, they can be compelling.

Best List-Building Tools to Scale Your Business

Without an active email list, bloggers will miss out on an incredible transactional opportunity because list building is the foundation of any customer-based business.

It is, however, not easy to build an effective list. Through email marketing, it is time-consuming and challenging to get good leads and keep them engaged. 

Based on our research and analysis, we have compiled a list of the best tools to build, interact with, and maintain an email list.

Today, we will go over the best list-building tools you can use to build your email list, along with tips for how to make these tools work for your business. 

What are the Best List Building Tools?

Your search for the best list-building tools ends here. Below is a comprehensive list of the best tools to take your email marketing campaigns to the next level. 

The best list-building tools are: 

OptinMonster: Best for Exit-intent Pop-Ups

OptinMonster - Best List-Building Tools

OptionMonster is a list-building software that helps website owners build email lists, yield more effective leads, and increase conversions.

It has plenty of other features and purposes now, but they all work toward the same goal of helping you generate more leads through your website, regardless of your website or the type of leads you want to generate.

Benefits of Using OptinMonster:

  • With the drag-and-drop form builder, you can create many opt-in forms, such as floating bars, lightbox popups, and sidebar forms.
  • As users navigate away from the page, Exit-Intent Technology identifies those about to leave based on their behaviour and serves a targeted campaign to them.
  • Users can access built-in analytics and integration with Google Analytics to view views, clicks, conversion rates, referral pages, and more.
  • You can display different forms on specific categories or pages to create a highly targeted email list.
  • Form designs, content, headlines, and more can be A/B tested to determine which variation converts best.

OptinMonster can be installed on nearly every website platform on the internet and can integrate with every primary email marketing service. The only requirement is that you must have a website where you can add custom JavaScript in the body of your website’s pages. OptinMonster also offers the best WordPress popup plugin on the market, seamlessly integrating OptinMonster’s excellent features with your self-hosted WordPress site.

You can also use OptinMonster on your client websites. You can signup for Growth Plan to get additional features such as Account Management, Sub-Accounts, Custom Branding, and everything you need to deliver a top-notch experience for your clients.


$9/mo $16/mo
1,213,437+ websites use OptinMonster to turn their traffic into subscribers.
Instantly grow your email list, get more leads and increase sales with the most powerful conversion optimization toolkit.

Sendinblue: Best for Speed and Lightweight Implementation 

Sendinblue - Best List-Building Tools
Sendinblue – Best List-Building Tools

From its extensive feature set, including a CRM, marketing automation, transactional emails, SMS, landing pages, and Facebook ads, to its competitive pricing, Sendinblue is serious about becoming a significant player in the email marketing software market.

Small businesses can increase conversions by enhancing their email campaigns with their help, including advanced email automation, segmentation, personalization, and landing pages and forms. 

The features of Sendinblue are impressive, without a doubt. What would we suggest? You can try it out on the free version to see if you like it after reading this SendinBlue review.

Maybe you’ll find yourself able to enjoy sophisticated marketing automation on a budget.

Benefits of Using SendinBlue:

  • The ability to send transactional emails and SMS
  • Includes basic CRM features
  • An impressive amount of automation and integration
  • Template creation options that are more extensive
  • Creating email marketing campaigns
  • It Comes With email marketing automation
  • It Comes With transactional email and SMS
  • Social media marketing

Promote your brand and grow your business with beautifully designed emails. Always send your campaigns at the best time for each contact with the SendinBlue Sent Time Optimization feature.

Sendinblue will probably be of most interest to you in this section. Prices and the number of emails you can send on each plan are as follows:

Firstly, SendinBlue charges “per email sent” and not by the size of your contact list. So, no matter how big or small your list is, Sendinblue will not charge you more.

Another critical point is that the plan is free. 9,000 emails a month translates to 300 emails/day. There are 2,000 contacts per email automation.

This free plan might be sufficient if you’re starting with a list of between 100 and 500 subscribers.

Outgrow: Best to Engage Website Visitors

As a great platform, Outgrow makes it simple to create different engaging, colourful, and hopefully interactive content such as interactive quizzes, assessments, surveys, calculators, etc.

This tool is for you if you want to boost customer engagement, generate more leads, increase traffic, and generate more conversions, among other things. 

A list-building tool must include interactive content, and this software lets you create interactive quizzes, polls, survey forms, and chatbots. 

Best List-Building Tools

It is perfect for content creators who want to take advantage of interactive content at an affordable price. You will be able to provide real value to your users and enhance their experiences, resulting in accurate results for your brand.

Benefits of Using Outgrow:

  • Create various list-building tools without coding: Outgrow allows you to build simple and advanced marketing tools without coding skills.
  • Create custom forms in a modern style: You can customize Outgrow’s list building and data forms to reflect your brand so your audience can easily relate to them.
  • Embed interactive experiences across multiple platforms: You can use Outgrow to get your audience’s attention by creating pop-ups or forms anywhere, including on websites, chatbots, emails, bars, etc.
  • Use data to analyze and leverage performance: Analyzing performance with a robust analytics panel can help to improve the process.

You can embed interactive content on any webpage or use it as a separate URL, increasing the conversion rate at crucial stages of your funnel.

In addition to the free trial, Outgrow offers lower-tier pricing options. You do not need a credit card to start a free trial. Enter your email address, and you can use the platform immediately.

You need to upgrade to one of the premium plans and select your package to unlock all of the software’s functions, for example, generating leads, options for quizzes and calculators, interactive tests, and more features from the free trial.

Optimonk: Personalize, Optimize and Monetize

Optimonk, an email list-building tool used by more than 46,000+ websites, helps increase lead generation and conversion on eCommerce sites like Shopify. 

Aside from offering a free list-building plan, OptiMonk is complete and specialized software. A lot of options are available using this tool, such as sidebars, popups, and full-screen notifications.

Optimonk is a free tool that has proven competitive in the eCommerce realm. 

OptiMonk’s strength lies in optimising your leads and converting them to sales more effectively than a simple email outreach list. 

Benefits of Using Optimonk:

  • There is an extensive collection of examples to make building popups a lot easier. 
  • It triggers unique popups based on inactivity or page usage to keep engagement high by identifying exit intent. 
  • Scroll-based trigger: Display your message after a visitor scrolls down at least X per cent of your page.
  • Offer specific products depending on their needs. As well as being highly specialized for eCommerce websites, its powerful targeting makes it possible to generate more leads by retargeting and targeting based on behavioural patterns.
  • You can use multiple tools within Optimonk to make your experience smooth. You can perform A/B testing, advanced targeting, real-time analytics, and integrate email and eCommerce platforms.

With Optimonk, engage your visitors with warm-up questions that increase engagement and boost subscriptions by up to 100%. Sync first-party data with your marketing automation tools to enrich customer profiles and build segments.

You can test out the Optimonk services free of charge. You can get even more from the other plans for a low price. 

25,000 views are included in the Essential plan, which costs only $39/per month, while the Growth plan costs $99/per month. One of the most popular plans is the Premium plan, priced at $249/month.

Using Bloom, WordPress sites can target email contacts using email list-building software. 

Bloom Plugin - Best List-Building Tools
Bloom Plugin – Best List-Building Tools

This list-building tool allows you to build interactive forms anywhere on your website using special targeting techniques. It is a popular plugin from Elegant Themes. 

Bloom has a beautiful and intuitive interface which makes it easy and fast to use. 

Best List-Building Tools

WordPress users can take advantage of this plugin that provides excellent pre-made templates and facilitates their email marketing activities.

The only downside is that it does not offer drag-and-drop functionality like the others on this list. 

Benefits of Using Bloom:

  • Multiple display and pop-up types are available: You can use Bloom to display pop-ups on your landing pages from several beautiful themes that come in six different styles, such as fly-ins, inline, below content, widget area, and unlock required.
  • Create a pop-up that represents your brand well: Choose or use more than 110+ templates to create a unique pop-up or form tailored to your tastes. Customize features such as colour, orientation, and borders.
  • Automate and manage your workflows from one place: Bloom allows you to change settings, test processes, track changes, get statistics, and even import or export data.
  • It is possible to set a time for the popup or form to appear, making it less intrusive for the user.

Bloom gives you all the tools you need to turn your website's visitors into loyal followers and customers. Not only is Bloom going to convert extremely well, but it will also look great doing it.

Bloom lets you target or exclude specific posts and pages and display unique forms with unique offers based on visitor location and interaction.

It is perfect for blog posts and content-heavy pages because Bloom allows you to automatically place opt-in forms below your post or page content, capturing the attention of your most engaged readers without upsetting their reading experience.

Sleeknote: Best UI and Ease of Use

SleekNote, another excellent option, is a great list-building tool that works best with pop-ups. You can display pop-ups for giveaways, discounts, and newsletters. There are no limits to how creative you can be.

Additionally, SleekNote is user-friendly, making it a good choice for beginners. Customer support is excellent, and there is even a section on the site for tutorials and examples of popup campaigns to build your authority. 

Specifically designed for eCommerce and service websites, it makes it easy to grow your email list. 

Benefits of Using Sleeknote:

  • It can uniquely target qualified prospects based on your preferences and guide them through your funnel. 
  • Fast-loading landing pages courtesy of lightweight design.
  • It has powerful targeting capabilities. Consequently, Sleeknote’s targeting is highly targeted using parameters such as referral source, sales funnel route, and whether the user is new or returning. You can use these parameters to optimize your landing pages more efficiently.
  • You can customize templates to match your brand and target audience. With its user-friendly pop-up builder, you can design pop-ups and slide-ins that suit your business needs and appeal to visitors.
  • With Sleeknote, it is easy to stay compliant with Google’s policies by optimizing your website. With Sleeknote’s services, you stay on the right side of Google’s interstitials policy.

Sleeknote allows marketers to get more leads and sales without waiting for their design or development teams. Pick a template, customize it as you need, and integrate it with your other marketing tools. From popup design to targeting options, Sleeknote gives you the freedom you’ve always needed. You can also try Sleeknote for free for 7 days.

How does the Sleeknote free trial work?

After starting a free seven-day trial, you will get immediate access to all products and features. After your free trial expires, you can choose a plan from within the dashboard. Your paid account will replace your free account, and everything collected during your free trials, like your campaigns, your leads, and your data, will be carried over. If, at the end of your free trial, you decide Sleeknote is not for you, your account will expire at the end of the seven-day trial period.

GetSiteControl: Sell More With Popups

Many email list-building tools exist, but none are as comprehensive as this one. It makes it one of our top picks if you want a list-building tool that can do everything from a straightforward dashboard.

GetSiteControl - Best List-Building Tools
GetSiteControl – Best List-Building Tools

Pop-ups are ideal for landing new subscribers, sales, and survey responses and offering deals and general information on your site. 

Build your email list with one of the easiest and simplest methods possible with GetSiteControl.

Best List-Building Tools

Getting in control of leads is easy with GetSiteControl’s all-in-one lead targeting platform. Numerous opt-in forms, pop-ups, contact forms, social media buttons, survey widgets, and even chatbot widgets are available.

Benefits of Using GetSite Control:

  • Different targeting options are available in GetSiteControl, but if you want your forms to appear based on clocks or behavioural triggers, GetSiteControl makes that possible.
  • GetSiteControl results are available on multiple platforms. Whether your audience uses a mobile device or a desktop, GetSiteControl’s pop-ups are perfectly optimized to display on every device.
  • You can share services and results between multiple applications and be used on those apps or shared with them. GetSiteControl integrates with thousands of marketing tools.
  • Using its comprehensive dashboard, GetSiteControl notifies you of all views and clicks as your pages convert in real time.
  • You do not have to worry about mobile visitors or Persona Computer visitors. GetSiteControl supports both types of visitors.
  • You can easily view your email list and build statistics live. Visitors’ actions on your website are refreshed instantly. 
  • Cross-selling and upselling options are available. 
  • With an activity tracker, you can stop pop-ups that appear after a visitor abandons their shopping cart. 

GetSiteControl Pricing:

The pricing plans at GetSiteControl are some of the most affordable and straightforward. 

GetSiteControl plans are tailored to your current stage, so you only pay for what you need. All plans include branding-free widgets, integrations, built-in templates and live-chat support.

With the Small plan, you can get 20,000 widget views each month for just $9/month.

It costs $19/month for the Medium plan, which allows 100,000 widget views, and $29/month for the Large plan, which allows unlimited widget views.

You can also try it for free to test it 100% risk-free.

Hello Bar: Convert Visitors into Leads

With Hello Bar, you can engage your visitors in ways that will encourage them to join your mailing list and marketing campaigns. The tool helps direct visitors to specific pages, announce giveaways, and promote discounts and giveaways. 

Hello Bar - Best List-Building Tools
Hello Bar – Best List-Building Tools

Floating or fixed HelloBar bars appear when a visitor scrolls or appears at a set time or position. Some of the notable features of Hello Bar are listed below:

  • Bars, Modals, Sliders — Beautifully designed popups for your site. Easy to use, fully customizable and highly effective.
  • Advanced Targeting — Target messages to users for maximum impact. You can precisely target by device, location, visit, page, and more.
  • Easy to Use — 1-click installation. No coding is required to integrate with WordPress, Shopify, SquareSpace, Wix, & 17 more.

List-building software with up to 5,000 interactions per month, 100% FREE, is excellent for anyone interested in trying a free tool for the first time.

Benefits of using Hello Bar:

  • You can use websites and other marketing tools: Hello, Bar’s services are compatible with numerous other email marketing platforms, and they can be used on any website, including Shopify, Wix, MailChimp, WordPress, etc.
  • Effectively and precisely target your audience: With its advanced targeting features, you can deliver the most relevant and compelling messages based on parameters like location, device, page visited, and time.
  • Easy integration: It can be integrated with other commonly used tools such as Shopify, Wix, MailChimp, WordPress, etc
  • Plug-and-play installation: Once the installation is complete, run the program.
  • Free A/B testing: Free A/B testing might not be as good as others, but it is worth it because it is FREE.
  • Redirect traffic: You can easily redirect traffic to relevant pages using pop-ups and bars on the site. 

Hello Bar Pricing:

5,000 sessions are available for free with Hello Bar’s Starter plan. The plan also includes basic support, design, and little pop-ups. 

Also included in the complete plan list is the rich Elite plan, which gives up to 500,000 sessions at $99/month. Other plans include Premium ($49) and Growth ($29).

Omnisend: Increase Sales

In addition to email list building, Omnisend also supports SMS number list building. Pop-ups, web push, and many other features are available through this full-stack tool.

It is a significant advantage of Omnisend that they specialize exclusively in eCommerce email marketing. Due to specializing in this area, the services it provides are tailored to the needs of online store owners.

With Omnisend, you can provide your customers with a consistent, personalized experience by reaching them on their preferred messaging channels while improving your reach and conversions. With Omnisend, you can drag and drop these channels into a single workflow:

  • Email
  • SMS
  • Web push notifications

You get access to advanced segmentation options, transactional emails, SMS marketing tools, and workflows for eCommerce automation. You may pick from a good selection of email templates.

Benefits of Using Omnisend:

  • Cookies that are multiplatform: The information captured in cookies can be utilized across various platforms, including Facebook, Instagram, Google, Tik Tok, etc.
  • You can create a funnel of emails or SMSs using marketing automation: It begins the process automatically when you receive a lead.


  • Free: 0$ per month (500 emails)
  • Standard: $16 per month
  • Pro: $59 per month

In addition to offering free email list-building software, Omnisend is a simple, economical, and potent tool.

FAQs About Best List-Building Tools to Scale Your Business

  1. What is the process for creating a mailing list?

    Online list building can be accomplished through website pages, pop-ups, embedded signup forms, and social media accounts. You can also build offline mailing lists or in-store signup sheets at your events.

  2. What is a good size email list?

    A good size email list depends on several factors, such as the industry. There’s no universal number; you’ll need to do independent research for your market.

  3. How do I create an email list without a website?

    You can use several methods to build an email list without having a website. To collect email addresses, you can use a landing page, social media, personal contacts, referrals, guest blog posts, podcasts, Medium, Quora, and SlideShare.

  4. How do you manage email lists?

    To manage a healthy and robust email list, you need to welcome new subscribers and allow them to choose the email frequency. You must maintain a clean and legitimate email list to execute marketing efforts successfully. Don’t miss to eliminate or re-engage old contacts from the email list.

  5. Is buying an email list a good idea?

    Buying an email list is terrible because those emails may not be genuine. It wastes your money and time.

Conclusion on Best List-Building Tools

In conclusion, this guide pointed out the best list-building tools, including free ones, since we, too, had to start at some point, and we understand what it’s like to be on a budget.

With these list-building tools, you can quickly generate leads, gain subscribers to your email list, or create automated email campaigns.

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