Decide first whether you want a popup tool or a small email platform, because many popup tools now bundle newsletters and automation. Popup specialists focus on targeting and design, email-bundled tools capture and follow up in one place, and ecommerce tools aim at list growth and abandoned carts.
Poptin's homepage now leads with popups plus email marketing automation, and plenty of its rivals have gone the same way. That changes the question for anyone leaving it. This page is for site owners, small marketers and online stores who want on-site popups and lead capture somewhere else, with eight tools in no particular order.
Popup specialists, email bundles and store tools
Some tools below stay focused on popups and targeting. Others bundle newsletters and automated email. A few are aimed at ecommerce stores growing email and SMS lists. Knowing which you want saves you comparing tools that were never meant to do the same job.
Focused on the popup
Popupsmart, Claspo, Poper and Popup Maker keep the popup at the centre: templates and AI design, an AI agent for personalisation, forms and quizzes with A/B testing, and a WordPress plugin for sites that want everything inside their own dashboard. Pair any of these with the email platform you already use.
Popups with email attached
Mailmunch pairs lead capture with email marketing, which makes it the nearest match if you used Poptin's newer email side. Check its automation against the sequences you run today before you move a list.
Built for stores and funnels
Optinly, Sleeknote and ConvertFlow lean towards ecommerce and funnels: spin wheels and exit intent, gamified campaigns for different visitors, and question-led paths that qualify people before they're asked for an email address.
Eight lead capture tools compared
| Tool | Shape | Good for |
|---|---|---|
| Claspo | AI popup builder | Personalised popups with an AI agent |
| ConvertFlow | Funnel builder | Asking and qualifying visitors before capture |
| Mailmunch | Lead capture plus email | Popups and email marketing in one place |
| Optinly | Goal-based popups | Spin wheels and exit-intent campaigns |
| Poper | Forms, quizzes and popups | Forms, quizzes and surveys with A/B testing |
| Popup Maker | WordPress popup plugin | Targeted popups inside WordPress |
| Popupsmart | No-code popup builder | Template popups on most websites |
| Sleeknote | Popups and gamification | Gamified campaigns for different visitors |
The eight, alphabetically
In no particular order. Each line is the vendor's description of its own product.
Claspo
Best for: Personalised popups built with AI; the vendor offers an AI popup builder plus an AI agent for tailoring popups to visitors.
ConvertFlow
Best for: Lead capture and ecommerce funnels that ask questions, qualify visitors and personalise their path, which the vendor pitches as working from your own site.
Mailmunch
Best for: Capturing leads on your site and following up by email; the vendor pitches turning visitors into subscribers and customers.
Optinly
Best for: Stores that want spin wheels, exit-intent popups and goal-based campaigns; the vendor aims it at cutting cart abandonment and growing an email list.
Poper
Best for: No-code forms, quizzes, popups and surveys with A/B testing and smart targeting; the vendor names a free plan.
Popup Maker
Best for: WordPress sites wanting a popup plugin for targeted popups, which the vendor says turn visitors into subscribers and sales.
Popupsmart
Best for: Building popups from templates with AI-powered design on most websites; the vendor names a free plan and says a popup takes minutes.
Sleeknote
Best for: Gamified popups and forms for list growth, with the vendor pitching different campaigns for different visitors and goals.
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Straight advice on choosing a popup tool
If you already have an email platform you like, pick a popup specialist and connect it. Two good tools that talk to each other beat one tool that does both jobs half well. If you don't have email set up yet, a bundled tool is a sensible start, as long as you can export your list cleanly if you outgrow it.
Stores have one more choice to make. If cart abandonment is the main worry, a tool built around exit intent and goal-based campaigns will feel more natural than a general form builder. For more options, see my lists of OptinMonster alternatives and WordPress popup plugins.
Test triggers on a phone before launch
Test the trigger rules on your real pages, not the vendor's demo, and pay most attention to exit intent and mobile behaviour. Exit intent on a desktop usually means watching for the cursor heading off the page. A phone has no cursor, so ask each vendor what triggers it uses on mobile and check what that looks like on your own site.
A popup that blocks a phone screen can hurt both sign-ups and the visitor's experience. Check that the close button is easy to hit with a thumb, that the popup doesn't hide the content someone came for, and that it doesn't fire the second a page loads. If you'd find it irritating on your own phone, your visitors will too.
One last check: make sure a visitor who closes a popup isn't shown the same one on every page they visit afterwards. Frequency rules matter as much as triggers, and a tool that makes them easy to set will save you from annoying the people most interested in your site.
Do you make popup or lead capture software? Tool makers can ask to be considered for a featured place on this list.
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Frequently asked questions
Do I need a popup tool if my email platform has forms?
Not always. Built-in forms are fine for simple sign-ups. A popup tool earns its place when you want detailed targeting, exit intent, A/B tests or different offers on different pages.
What's an exit-intent popup?
It's a popup that appears when a visitor looks likely to leave, usually judged on a desktop by the cursor moving towards the top of the window. Mobile tools use other signals.
Do popups work on mobile?
They can, but they need care. Keep them small, easy to close and away from the content people came for, and test them on your own phone before launch.
Can a WordPress plugin do the same job as a hosted popup tool?
For many sites, yes. A plugin runs inside WordPress, while a hosted tool works across most website platforms. Check targeting, testing and email connections on both.
Are there free popup builders?
Yes. Several vendors on this list name a free plan on their own sites. Check what the free version limits, such as branding or the number of popups, before you rely on it.
Should ecommerce stores use spin wheels?
They can grow a list quickly, but they tend to attract people who mainly want a discount. Test one against a plain sign-up offer and watch who goes on to buy.
