Concepts referenced in this article, defined.
Run rigorous A/B tests and personalize every visit on Shopify or any storefront โ no engineers required.
Privy is the easier, more affordable tool for Shopify merchants who want exit-intent popups, email capture, and basic abandoned cart campaigns without a steep learning curve. Justuno is a more sophisticated conversion platform with advanced targeting, AI-powered product recommendations, and deep segmentation โ better suited for brands that have already optimized the basics and need to push conversion rate further. Most early-stage D2C brands should start with Privy. Justuno makes sense once you're generating significant traffic and have a conversion-focused team actively managing campaigns.
Privy is a Shopify-focused email marketing and popup tool that helps D2C brands capture email subscribers and reduce cart abandonment. It offers exit-intent popups, spin-to-win wheels, embedded signup forms, and automated email sequences including abandoned cart flows and welcome series. Privy's value proposition is simplicity and integration โ it bundles popup capture with basic email marketing in a single Shopify-native tool. It's one of the highest-rated apps in the Shopify App Store and is specifically built for smaller to mid-size ecommerce brands that want functional email capture without managing multiple platforms.
Justuno is a conversion optimization suite that goes beyond popups into on-site personalization, upsell banners, AI product recommendations, and advanced visitor segmentation. It integrates with Shopify, BigCommerce, Magento, and WooCommerce. Justuno positions itself as a complete on-site conversion platform โ one that doesn't just capture emails, but actively personalizes the on-site experience for different visitor types. It's designed for brands that have email capture working and want to use behavioral targeting to move visitors further down the funnel.
| Feature | Privy | Justuno |
|---|---|---|
| Exit-intent popups | Yes | Yes |
| Email capture forms | Yes | Yes |
| Spin-to-win wheel | Yes | Yes |
| Cart abandonment popups | Yes | Yes |
| Upsell/cross-sell banners | Limited | Yes (AI-powered) |
| Advanced visitor targeting | Basic | Advanced (UTM, referrer, behavior) |
| A/B testing built-in | Basic | Yes |
| Product recommendation engine | No | Yes (AI) |
| Email automation sequences | Yes (built-in) | Via integrations only |
| SMS capture | Yes | Yes |
| Back-in-stock popups | Yes | Yes |
| Shopify POS support | No | No |
| Free plan | Yes (limited) | No (14-day trial) |
| Entry-level pricing | ~$30/month | ~$29/month |
Privy's free plan covers up to 100 mailable contacts, making it genuinely useful for stores just starting out. Paid plans scale by contact count, starting around $30/month and increasing for larger lists. Privy bundles email sending with the subscription โ so you're paying for email marketing infrastructure alongside popup functionality. For brands just getting started with list building, this bundled approach often costs less than paying for separate popup and email tools.
Justuno starts at $29/month for up to 5,000 visitors per month. As traffic grows, so does the cost โ high-traffic stores (over 100,000 monthly visitors) will find Justuno pricing escalating significantly. Justuno does not include email sending; it integrates with Klaviyo, Mailchimp, and other ESPs, which means you pay for Justuno and your email platform separately.
The practical pricing comparison depends on your situation. If you already use Klaviyo and just want better on-site targeting and capture, Justuno's per-visitor pricing may be more predictable. If you want an all-in-one popup + email marketing tool with one subscription, Privy's bundled approach may cost less overall.
This is where Justuno pulls decisively ahead. Justuno can target visitors based on UTM parameters (showing a specific offer to visitors arriving from a particular ad campaign), referral source (different offer for organic vs. paid traffic), browsing behavior (pages visited, products viewed, time on site), cart contents (trigger a popup when cart value exceeds a threshold), geographic location, and visitor type (new vs. returning, loyalty member vs. non-member).
For a brand running multiple paid campaigns simultaneously, Justuno's UTM-based targeting means you can show campaign-specific offers: a "first order discount" popup for cold traffic from Meta ads, a "complete your purchase" popup for returning visitors from retargeting campaigns. This level of targeting precision can meaningfully improve popup conversion rates by showing visitors messages that match their context.
Privy's targeting covers the essentials โ exit intent, time on site, page visited, cart value thresholds, returning vs. new visitors โ and for most stores, this is sufficient. The complexity ceiling is lower, but the setup time and maintenance burden are also lower.
Both tools are effective for building your email and SMS subscriber list. Privy's spin-to-win wheel and exit-intent popups are well-tested templates with high conversion rates across Shopify stores. The default Privy popup templates are clean and perform reasonably without heavy customization.
Justuno's popup capabilities benefit from more behavioral trigger options. You can trigger a popup when a visitor pauses on a specific product image, when they scroll 60% down a product page, or when they add an item to their cart but don't proceed to checkout within 30 seconds. These micro-behavioral triggers can catch visitors at more precise points of intent.
One important principle that applies regardless of which tool you choose: popup design and copy matter more than the tool itself. A well-written, well-timed offer in a simple Privy popup will outperform a poorly written offer in a sophisticated Justuno popup every time. The tool creates the delivery mechanism; the offer and message determine whether it works.
Privy includes built-in abandoned cart email sequences โ a key differentiator over Justuno for brands without Klaviyo. When a visitor provides their email (via popup or checkout) and then abandons their cart, Privy automatically triggers a sequence: first reminder at 1 hour, second at 24 hours, third at 72 hours (configurable). For Shopify stores not yet using Klaviyo, Privy provides a complete capture-to-recovery workflow in one tool.
Justuno does not include email sending. It captures the email address (via popup) and passes it to your ESP. Abandoned cart sequences must be managed in Klaviyo, Mailchimp, or another email platform. If you're already using Klaviyo, this is not a limitation โ Klaviyo's abandoned cart flows are more powerful than Privy's. If you don't have a dedicated ESP yet, Privy's built-in sequences are a meaningful practical advantage.
Both Privy and Justuno help you capture leads and reduce abandonment, but their testing capabilities are limited to the popup itself โ they don't tell you whether your underlying product page, hero section, or CTA is performing as well as it could.
The popup is the last line of defense for visitors about to leave. But if your product page wasn't compelling enough in the first place, the popup is working against the grain of the page experience. The highest-impact improvements often come from the page itself โ better product photography, clearer descriptions, more prominent reviews, a more compelling CTA โ not from the exit-intent popup that fires when someone is already leaving.
CustomFit.ai addresses this. Use Privy or Justuno for email capture and on-exit offers. Use CustomFit.ai to run A/B tests on the actual store pages โ product descriptions, CTA placement, trust badges, pricing display, social proof positioning โ without touching any code. The two layers work simultaneously: page-level optimization reduces the number of visitors who trigger the exit popup, and popup optimization captures more of those who are still leaving despite a good page experience.
Together they drive conversion rate improvement from both ends of the abandonment problem.
Can Privy replace Klaviyo? Privy has its own email sending functionality including abandoned cart flows, welcome series, and broadcast campaigns. However, Klaviyo is significantly more powerful for segmentation, flow complexity, and reporting. Most scaling D2C brands use both โ Privy for on-site popup capture and basic email sequences, Klaviyo for sophisticated multi-touch email marketing.
Does Justuno work with WooCommerce? Yes. Justuno supports WooCommerce, BigCommerce, and Magento in addition to Shopify. Privy's core product is built primarily around Shopify, with WooCommerce support that is less full-featured.
Can I A/B test popups in Privy or Justuno? Privy offers basic popup A/B testing on higher-tier plans โ you can test two versions of a popup and see which converts better. Justuno has more built-in A/B testing for promotions and offers. Neither tests your full page experience; for that you need a dedicated CRO tool like CustomFit.ai.
Which tool has better Klaviyo integration? Justuno's Klaviyo integration is more feature-rich, passing custom properties and enabling Klaviyo-segment-based popup targeting (e.g., show a different popup to known VIP customers vs. first-time visitors based on Klaviyo segment membership). Privy integrates with Klaviyo but is designed to function as a standalone email tool, so the integration is less deep.
What's the best popup tool for a brand with under 10,000 monthly visitors? Start with Privy's free plan or low-cost paid tier. Get your email capture and basic abandonment sequence running. The advanced targeting features in Justuno don't pay dividends until you have enough traffic to meaningfully segment your audience. Once you're generating consistent traffic above 20,000โ30,000 monthly visitors, revisit whether Justuno's advanced targeting justifies the cost.
How much should I offer in a popup discount to maximize capture? There's no universal answer, but common benchmarks for D2C brands are 10โ15% off the first order or a fixed amount (e.g., โน200 off orders over โน1,500). The right offer depends on your average order value and margin structure. Test different offers โ this is exactly what CustomFit.ai's A/B testing capability is built for.