Boost Klaviyo List Building
with Claspo

Boost Klaviyo List Building
with Claspo

A Pop-up Builder Packed with Advanced Features

A Pop-up Builder Packed with Advanced Features

  • Create custom pop-ups and forms

  • Use templates that adapt to your branding

  • Target the right segments

  • Enrich Klaviyo profiles

Based on
50+ reviews once

Based on 50+ reviews once

Create high-converting popups in minutes by Claspo Popup Maker
Create high-converting popups in minutes by Claspo Popup Maker

Every Tool You Need to Boost Your List-building Campaigns

Every Tool You Need to Boost Your List-building Campaigns

Claspo is a free pop-up builder that helps boost sales and grow email lists

Claspo - HubSpot Pop-Ups and Forms
Claspo - HubSpot Pop-Ups and Forms
Claspo - HubSpot Pop-Ups and Forms

What's Inside Claspo

What's Inside Claspo

  • User-friendly drag-and-drop editor

    User-friendly drag-and-drop editor

  • 1000+ ready-to-use templates

    1000+ ready-to-use templates

  • Extensive popup layout options

    Extensive popup layout options

  • Advanced possibilities to setup display rules

    Advanced possibilities to setup display rules

  • Dashboard with User Roles and Permissions

    Dashboard with User Roles and Permissions

  • Built-in analytics and A/B testing

    Built-in analytics and A/B testing

  • Simple script installation

    Simple script installation

  • Limitless integration possibilities

    Limitless integration possibilities

  • Multilingual localization

    Multilingual localization

  • 24/7 Customer support

    24/7 Customer support

  • Order widget designs and get help integrating them

    Order widget designs and get help integrating them

Simple Integration via API

Simple Integration via API

Claspo - Integrate Seamlessly via OAuth
  • Integrating Claspo with Klaviyo takes no longer than 5 minutes

  • Send leads and user data to any CRM, CDP, email marketing, or analytics service

  • Take advantage of a step-by-step Klaviyo integration walkthrough

  • Need help? No worries, our team is ready to guide you through the integration process 24/7

Stay Ahead of the Competition with Advanced Features

Stay Ahead of the Competition with Advanced Features

We took the pop-up builder to a new level and sprinkled some extra goodies on Claspo for you to enjoy

Claspo - Streamline Conversions Like a Pro
Claspo - Streamline Conversions Like a Pro
Claspo - Streamline Conversions Like a Pro

Streamline Conversions Like a Pro

Annoyance Safeguard

Set up the desired time intervals between displaying widgets and show your offers one by one.

Overlap Protection

Want to show multiple widgets within a single session? Claspo makes sure they don't overlap.

Get The Quality Data

Email Domain Spellchecker

Increase the quality of the user data you gather with no more misprints in domain names.

Business domains

Want to collect only business emails? We got you covered.

Claspo - Get The Quality Data
Claspo - Get The Quality Data
Claspo - Get The Quality Data
Claspo - Streamline Conversions Like a Pro
Claspo - Streamline Conversions Like a Pro
Claspo - Streamline Conversions Like a Pro

Be Flexible

Adaptive Localization

Running multi-localized websites? Claspo displays localized pop-ups automatically based on visitor language preferences.

Validate and Test

Extend Analytics Capabilities

Discover the impact of your popups on user behavior. Use Claspo event triggers to transfer user activity data to your Google Analytics account or any other service via GTM.

Claspo - Validate and Test
Claspo - Validate and Test
Claspo - Validate and Test

What Our Clients Say About Us

What Our Clients Say About Us

Aliona Usolkina

Head of Digital Marketing

‘Selling 50% of the collection on pre-order before stock was a real turning point for us. It showed that gamified conversion-focused pop-ups can be a powerful tool for validating demand.’

Aliona Usolkina

Head of Digital Marketing

‘Selling 50% of the collection on pre-order before stock was a real turning point for us. It showed that gamified conversion-focused pop-ups can be a powerful tool for validating demand.’

Tetiana Buchynska

Marketing Specialist

The intuitive interface and diverse template library make pop-up creation a quick and enjoyable task. I can create pop-ups without bothering with design too much, just write my copy and align new elements, and it's ready to go.

G2

Tetiana Buchynska

Marketing Specialist

The intuitive interface and diverse template library make pop-up creation a quick and enjoyable task. I can create pop-ups without bothering with design too much, just write my copy and align new elements, and it's ready to go.

G2

DeepStateMap

Marketing Specialist, DeepStateMap

Our conversion rate increased by 3.9 times thanks to the SPA supported by Сlaspo. The script works more correctly, is more stable, and loads better. We really enjoy multilanguage widgets and geotargeting!

DeepStateMap

Marketing Specialist, DeepStateMap

Our conversion rate increased by 3.9 times thanks to the SPA supported by Сlaspo. The script works more correctly, is more stable, and loads better. We really enjoy multilanguage widgets and geotargeting!

Maruti Konduri

Maruti Konduri

Co-founder of Cracku

Seasonal countdown widgets delivered dramatic lift — taking Cracku’s campaigns from ~1.8% CTR to 7-8% in just a few days. Smart urgency, precise targeting, and festive relevance generated up to 4× higher CTR compared to their regular promos.

Maruti Konduri

Maruti Konduri

Co-founder of Cracku

Seasonal countdown widgets delivered dramatic lift — taking Cracku’s campaigns from ~1.8% CTR to 7-8% in just a few days. Smart urgency, precise targeting, and festive relevance generated up to 4× higher CTR compared to their regular promos.

Borys Skowron

Borys Skowron

Founder of WHOSE

We saw a huge improvement in sign-up rates — going from around 3-5% to as high as 50% with the gamified popups.

Borys Skowron

Borys Skowron

Founder of WHOSE

We saw a huge improvement in sign-up rates — going from around 3-5% to as high as 50% with the gamified popups.

Tony Fiston

Tony Fiston

Marketing

It looks like Claspo makes creating and launching website widgets easy fot any coding skills. I am excited to try the customization options and KPI-driven analytics to optimize my site's conversion.

Product Hunt

Product Hunt

Tony Fiston

Tony Fiston

Marketing

It looks like Claspo makes creating and launching website widgets easy fot any coding skills. I am excited to try the customization options and KPI-driven analytics to optimize my site's conversion.

Product Hunt

Product Hunt

Kate K.

Kate K.

Partner Relations Manager

The A/B testing feature is a huge plus! Overall: With Claspo's wide range of customizable widgets, you can create all kinds of interactive elements that help your sites stand out and engage visitors. The A/B testing allows you to optimize each element and determine which widget performs better

Capterra

Capterra

Kate K.

Kate K.

Partner Relations Manager

The A/B testing feature is a huge plus! Overall: With Claspo's wide range of customizable widgets, you can create all kinds of interactive elements that help your sites stand out and engage visitors. The A/B testing allows you to optimize each element and determine which widget performs better

Capterra

Capterra

Viktoriia Tsalpinska

Viktoriia Tsalpinska

Email Marketing Specialist, Grade.ua

We decided to introduce a floating information widget. It is not intrusive, but it had to appear with each new session. Claspo was the easiest way to do this. The platform is easy to understand, you can figure everything out in half an hour.

Capterra

Capterra

Viktoriia Tsalpinska

Viktoriia Tsalpinska

Email Marketing Specialist, Grade.ua

We decided to introduce a floating information widget. It is not intrusive, but it had to appear with each new session. Claspo was the easiest way to do this. The platform is easy to understand, you can figure everything out in half an hour.

Capterra

Capterra

Jordan S.

Jordan S.

Product Marketing Lead

An easy-to-use and customizable solution. No cons were found during the work, overall clear and useful functionality.

Capterra

Capterra

Jordan S.

Jordan S.

Product Marketing Lead

An easy-to-use and customizable solution. No cons were found during the work, overall clear and useful functionality.

Capterra

Capterra

Nikita Gontar

Nikita Gontar

Retention Manager, Devart

Incredible easy-to-use software with a bundle of features that can help you to obtain more leads. Awesome customer support. Highly recommended!

Capterra

Capterra

Nikita Gontar

Nikita Gontar

Retention Manager, Devart

Incredible easy-to-use software with a bundle of features that can help you to obtain more leads. Awesome customer support. Highly recommended!

Capterra

Capterra

Turn Traffic into Customers With Claspo

Turn Traffic into Customers With Claspo

Turn Traffic into Customers With Claspo