9 Best WordPress Opt-In Form Plugins for 2026

Growing an email list is critical for any business, and WordPress opt-in forms make it easy. In 2024, intelligent forms and smart targeting deliver higher conversions. In this updated guide, we compare the top WordPress plugins to help you choose the right solution.

Why Opt-In Forms Matter

Email marketing remains one of the highest converting digital channels. But nurturing subscriber relationships starts with a solid list building strategy.

Opt-in forms incentivize visitors to join your mailing list. Positioned strategically throughout your site, they convert casual visitors into loyal followers.

Here are three reasons why you need opt-in forms:

1. Grow your audience

Forms convert website traffic into subscribers that you can continue to nurture. More subscribers means a bigger audience to market to.

2. Understand your customers

By offering an incentive in exchange for an email address, you learn more about who your ideal customers are.

3. Increase engagement

Email subscribers are more likely to return to your site, make purchases, and engage with your brand.

But you need the right opt-in plugin to make this happen…

Choosing the Best WordPress Opt-In Plugin

All plugins featured here integrate with email services like Mailchimp, ActiveCampaign, Constant Contact etc.

When comparing WordPress opt-in plugins, consider these features:

✅ Types of forms – Embedded, pop-ups, slide-ins, bars, overlays

✅ Templates – Professionally designed, customizable

✅ Targeting – Advanced rules to display to certain visitors

✅ Triggers – When forms display based on actions

✅ Integrations – Connect to top email platforms

✅ Analytics – Track performance and optimization

Next, we’ll compare the top plugins available in 2024 based on hands-on testing.

1. Thrive Leads

Thrive Leads is the premier all-in-one opt-in plugin. With its robust feature set, it’s easy to see why it’s a top choice.

Key Features

📋 8 types of forms including pop-ups, slide-ins, widgets

🎨 100+ templates and drag-and-drop designer

🎯 Smart in-page targeting to display for certain visitors

⚙️ Custom triggers like exit-intent, scroll percentage, clicks

📊 A/B testing to optimize conversions

🤝 Integrations with all major email services

For the ultimate flexibility to create virtually any type of high converting opt-in form, Thrive Leads is hard to beat.

Pricing

• Standalone: $99/year
• Thrive Suite: $299/year (includes all Thrive plugins)

Try Thrive Leads

2. ConvertPro

ConvertPro takes a modular approach with different plugins for each type of form. This optimized performance sets it apart.

Key Features

📋 7 types of forms – Popups, slide-ins, embedded, plus more

🎭 100+ templates with easy customization

🎯 Display conditions target forms to certain posts/pages

⏰ Action triggers like exit-intent, scrolling, clicks

📊 A/B testing to improve conversions

🔗 Popular integrations including Mailchimp, HubSpot

With its speed and flexibility, ConvertPro is a great choice for marketers who value optimized performance.

Pricing

• Yearly: $99
• Lifetime: $399
• Get 10% off with code: SAVE10

Try ConvertPro

3. ConvertBox

ConvertBox takes an intelligent approach to opt-ins. While designed as a standalone web app, it integrates seamlessly with WordPress.

Key Features

📋 5 types of forms – Popups, fly-ins, notifications, plus more

🎯 Smart targeting based on visitor stage in sales cycle

📅 Scheduling display forms on certain days

🎭 Top-converting templates focused on sales conversations

📊 Built-in analytics conversion tracking

🔁 Zapier integration connects to 1,000+ apps

For savvy digital marketers, ConvertBox delivers targeted, data-driven opt-in forms.

Pricing

• One-time charge: $495

Try ConvertBox Free Trial

4. Bloom

Bloom from Elegant Themes focuses on simplicity for beautiful opt-in forms. As part of a full WordPress toolkit, it’s a smart package.

Key Features

📋 6 types of forms – Popups, slide-ins, inline, plus more

💯 100+ templates with basic customization

🎯 Content targeting to display on certain posts/pages

🕹 Behavior triggers like scroll depth, clicks, time on site

👥 Segment subscribers based on opt-in source

🎛 Central dashboard to manage everything

For those who want simplicity along with the full Elegant Themes suite, Bloom is a great fit.

Pricing

• Elegant Themes membership: $89/year

Try Bloom with Elegant Themes

5. OptinMonster

Known for pop-ups, OptinMonster takes an advanced targeting approach to display contextually.

Key Features

📋 8 types of forms – Popups, slide-ins, bars, plus more

⏱ Behavioral triggers like exit-intent, time on page

🎯 Advanced targeting rules to deliver individual experiences

📊 A/B testing to optimize conversions

🎛 Central dashboard to manage all campaigns

For savvy marketers who want robust targeting options, OptinMonster is a top performer.

Pricing

• Starts at $14/month annually

Try OptinMonster

6. Elementor Pro Popup Builder

Elementor‘s popup builder lets you quickly build on-brand opt-in forms.

Key Features

📋 7 types of popups – Fly-ins, bars, lightbox, plus more

🎨 100+ templates for slide-ins, welcome mats, more

⚙️ Advanced controls over styling, layout, animations

🎯 Trigger conditions to display when certain actions met

🤝 Integrations with top form and email tools

For those already using Elementor for their WordPress site, its capable popups are a natural fit.

Pricing

• Starts at $59/year

Try Elementor Pro

7. WP Subscribe

WP Subscribe offers a basic yet free opt-in plugin. The widgets integrate easily while still offering customization.

Key Features

📋 Widget forms – Embedded opt-in widgets

💵 Free version – Generous free offering

🤝 Top integrations – AWeber, Mailchimp, more

🎨 Customization – CSS styling options

👍 Lightweight – Optimized performance

For those wanting a free, no-frills option, WP Subscribe delivers.

Pricing

• 100% Free!

Get WP Subscribe

Summing Up the Best WordPress Opt-In Plugins

The right plugin comes down to your budget, skill level, and specific use case.

For all-in-one power with lots of options, Thrive Leads is hard to top.

ConvertPro takes a modular approach focused on speed and flexibility.

For smart targeting and built-in analytics, ConvertBox is ideal.

Bloom simplifies opt-ins as part of the Elegant Themes ecosystem.

And OptinMonster shines with robust targeting and personalization.

No matter which you choose, the most important step is getting started. Add forms throughout your site, test different styles and offers, and track conversions. With a strategic approach, you’ll grow your email list in no time.

Now that you know how to capture emails, learn how to send emails that convert.