OptinMonster vs. SumoMe vs. ConvertPlug – Which is the best list building tool?

When it comes to online marketing, email has proved to be a promising tool, often eclipsing all the other channels available for the purpose.

Email acts as a reliable podium to share news about new campaigns, special discounts and offers, or contents in a creative and personalized way. So, it is advisable to build and maintain an email list. It has been observed that 80-90% of the landing page traffic is brought by email marketing.

best optin list building plugin for WordPress

Marketing design over beige background, vector illustration

Emails also bring a better conversion rate your way since via emails, you can get direct access to a customer’s inbox, which is quite a personal space where one receives mails from family, friends etc.

No wonder that such messages shared via emails succeed in grabbing the attention of more customers as compared to any other marketing channels, often enticing many of them to visit your website and either signup for a newsletter, download an ebook, or buy from you.

To turn a random visitor into your blog subscriber or make him/her take an action you desire, all you need is to have a beautiful form on display and complement it with a juicy incentive to entice them into signing up. You can do the task easily with three tools namely OptinMonster, SumoMe and ConvertPlug.

Let’s do a comparative study to find out which one would give you your money’s worth.

OptinMonster vs. SumoMe vs. ConvertPlug

Unique Features & Benefits



⇒ Exit-intent technology: This feature helps you to convert your abandoning website visitors into revenue. OptinMonster’s SMART behavioral technology notices user behavior and prompts them with a targeted campaign at the exact moment they are about to abandon your page. This way, you can convert an additional 2-4% of your users into email subscribers, some of whom will soon become your paying customers.

⇒ A/B testing: With it, you can do away with the guesswork, test variations in your opt-ins and arrive at data-driven decisions on what works the best.

⇒ Built-in Analytics: This feature gives you useful insight into the stats, thus letting you measure your results and take the requisite actions to improve your lead-generation strategy.

⇒ Page-level targeting: This feature let you target individual pages, posts, and categories. This way, you can display different opt-ins on different pages, with extremely targeted taglines, messages, design, and content.

⇒ Mobile-specific popups: With it, you can create mobile-specific popups for your audience to bring maximum benefits (in terms of increasing your mobile app downloads or displaying a targeted message just to your mobile audience) your way.

Try OptinMonster



⇒ A/B Testing: With split testing, you can compare two versions of your opt-ins, thus enjoying conversion rate optimization.

⇒ Custom Designed Templates: With 15 attractive List Builder templates, you can enjoy complete control over the timing and design of your email list signups or newsletter popups.

⇒ Advanced Display Rules: With it, you can display different popups for different visitors. For example, if your Facebook page is driving a lot of traffic your way, you can set up a pop-up just for these visitors.

⇒ No Branding + VIP Support: With no SumoMe branding, you can make all your opt-ins and popups look professionally designed. What’s more, you get round the clock support to deal with any problems or issues that you may have.

⇒ Mobile optimized: With mobile optimized pop-up plugins, you no longer have to risk losing your mobile visitors.

⇒ Smart Mode technology: This technology identifies the precise moment when a visitors is about to abandon your site and displays a beautiful lightbox popup immediately to hold his/her attention and ask for his/her email address.

Try SumoMe



⇒ Built-in Email Collector: ConvertPlug has an inbuilt email collector called Connects. This helps store leads data and integrates with all major email marketing tools.

⇒ 700+ Font Options: From a whopping 700+ font options, you can select the one that suits your business the best.

⇒ 100% Customizable: You can customize the opt-ins and pop-ups entirely, according to your requirement.

⇒ Real-Time Analytics: With it, you can understand your conversion rate status better, which in turn would let you make informed decisions.

⇒ Trigger Testing: By displaying pop-ups at different times through a user’s journey, this feature helps you to find out the highest converting time.

⇒ External Source Lead Capture: ConvertPlug allows you to capture lead data from external sources like Contact Form 7, WP Comment Form, WP Registration Form and WooCommerce.

Try ConvertPlug



Opt-in Forms Supported

The following email opt-in form types and positions are made available by OptinMonster, SumoMe, and ConvertPlug:

  • Lightbox Popup
  • Slide-ins
  • Floating bar/Hello Bar
  • 2-Step Optin
  • Videos opt-in
  • Mobile Opt-in
  • Welcome mat/Full-screen form
  • Custom HTML/Canvas Opt-in forms
  • Locked Content Popups

⇒ You can get sidebars with OptinMonster but SumoMe and ConvertPlug don’t offer it.

While, except OptinMonster, the other two, i.e. SumoMe and ConvertPlug offer:

  • Social Media Popups

Except for SumoMe, the other two offer:

  • Widgets Area
  • After Post/Inline Forms

Apart from the normal opt-in forms and popups that we create using these plugins or tools, ConvertPlug is the only plugin that allows users to capture leads from external sources like Comment Forms, WP Registration Forms, Contact Form 7 and more.

See how they work?


After successful Installation and activation of OptinMonster, Setup, Configuration, Design and managing the Output Settings of the Optin via OptinMonster Builder is done. Reports Tab is selected to obtain the all optin Stats breakdown which can be used in future for improvement of the website.

Once the initial settings are done, you are all set to proceed to create attractive popups and opt-in forms to attract visitors and generate leads.


Once you have downloaded SumoMe, the installation and activation of this plugin are same like any other plugin in WordPress.

When any visitor is about to leave the site, SumoMe’s Smart mode technology detects the intention to abandon the site and immediately displays a lucrative lightbox which entices the visitor to provide his/her email address.

The technology is mobile optimized, thus making it helpful to draw back you’re abandoning mobile visitors as well. To give the real-time feedback and to sense what the customers are really interested in the website and the latest clicks in the website, Heat Map is another interesting feature that SumoMe comes equipped with.


Creation of email subscription forms, pop-ups and notification bars is very easy with ConvertPlug. Post installation, you can see the dashboard. Here, you will find the module tab which enables you to activate the modal popups, info bar and slide in popups for creating interactive and beautiful styles to attract visitors’ attention.

Connecting to email marketing server is quite easy, by giving just the campaign name and affirmation for connecting to the third party software, and giving the API key takes you straight away to the server. Model Designing is also effort-free because of available design options.

From selecting the display position of your opt-ins (from amongst three display positions) and customizing the pre-made layouts, to leveraging A/b testing as well as the triggers and filters to display the popups at the right place and right time, ConvertPlug gives you everything that you will ever need to start boosting your conversions.

Pricing Plans Of OptinMonster, SumoMe And ConvertPlug

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At $9 per month, the Basic plan of OptinMonster is an ideal tool for those just starting out. Businesses eyeing growth and desirous of doing more should opt for the Plus plan at $19 per month, while the Pro plan at $29 per month is for those looking to get huge results fast.


The Free plan is ideal for beginners, where they will get all the apps, while those who are a little serious with their business should ideally opt for the Starter plan at $10/month where they get VIP Support and No SumoMe branding, in addition to whatever is offered in the Free plan.

Pro plan at $100/month is the best bet for those desirous of getting some kickass results. With it, you will get all that’s offered by the Starter plan, in addition to the following:

  • A/B testing
  • Pro Insights
  • Full selection of Pro Templates
  • Advanced display rules
  • Enterprise integrations

You can opt for a 14-day free trial to test the Pro plan before you pay for it.


You can purchase ConvertPlug’s Regular License at an unbelievable price of $21. Apart from receiving an extensive set of features, you’ll receive future updates, quality checks by Envato, developer’s support for 6 months and access to the complete knowledge base on the ConvertPlug website. In case you need prolonged assistance from the support team, you can opt for 12 months’ support by paying an additional $6.30.

Conclusion- Personal Message From The Editor. 


Apart from having an extremely attractive look, OptinMonster’s opt-in forms are very effective as they give a significant boost to your conversions. At present, this tool offers 9 different types of opt-in forms to choose from, namely Locked contentAfter Post/In-line, Lightbox, Floating Bar, Fullscreen, Mobile, Slide-In, Canvas, and Sidebar.

However, you need to buy the Pro plan to use all these as the Basic plan gives you access to only Lightbox Popup Opt-in. Other likable

 and highly useful features of this tool are exit intent technology, in-built Google Analytics/Reporting, A/B testing and page level targeting.


Though SumoMe has several paid features, you can do a lot with its free version too. To begin with, consider the typical pop-up box that SumoMe List Builder makes pop up after a visitor has browsed a particular number of sections.

From the pop-up peaking at the corner of a page once the visitor has scrolled down a certain part of the web page, the page bar atop asking for an email address, in-built Google Analytics, Welcome Mat, content analytics and heat maps, to SumoMe Highlighter and the social media sharing widget that you can put on your site to help visitors share your content on Twitter, Facebook, G+ and Pinterest, this tool impresses many.


It is perhaps the alone WordPress plugin tool in the market that comes at a cost-effective price despite being feature-heavy. You can get the regular license at an unbelievable price of $21 which includes QC by Envato, lifetime future updates and 6 months’ support. You can also extend the support period to 12 months by paying only an additional amount of $6.30 (thus saving up to $8).

Another positive aspect of ConvertPlug is its easy integration with your favorite CRM and email service providers, namely Mad Mimi, MyMail, Active Campaign, MailChimp, My Emma, HubSpot, Campaign Monitor, AWeber, Constant Contact, iContact, SendReach, Sendy, MailerLite, SendinBlue, GetResponse, ConvertKit, TotalSend, Campayn, SimplyCast, Infusionsoft, MailPoet, Benchmark Email, Mailjet, CleverReach and many more.

The additional feature of letting us capture leads through WooCommerce Checkout Form, Visual Composer Addon, WP Registration Form and WP Comment Form is amazing!

With so much on offer at an unbelievable pocket-friendly price, ConvertPlug surely appears to be the best of the lot.

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Soumya Nair

Dedication, timely efforts and passion are the key protocols that keep me succeeding as an outstanding Digital Marketer, blogger and trainer. I love what I do. My main target is to get conversions for the business with all means of search engine optimization. I believe in learning and exploring digital marketing. I love organic digital marketing. Thanks for reading :)