Best Shopify Marketing and Conversion Apps

Apps that help stores acquire customers, capture leads, build trust and increase conversion through email, reviews, popups, bundles and upsells.

Updated June 11, 2026. Shopify's marketing and conversion category covers reviews, bundles, upsells, checkout, email marketing and customer acquisition. This page is the broad category hub; the deeper review, loyalty and upsell rankings remain separate pages.

#1

Klaviyo

Email & SMSDirect Detectify coverage

Klaviyo is the first app to review when lifecycle marketing, segmentation, email and SMS revenue are central to the store's growth model.

Best forStores that want a serious owned-marketing engine.
Detectify signalKlaviyo storefront scripts are directly mapped in Detectify.
#2

Omnisend

Email & SMSDirect Detectify coverage

Omnisend is a strong alternative for merchants that want email, SMS and automation with a more commerce-focused setup path.

Best forStores that need lifecycle automations without a heavy enterprise feel.
Detectify signalOmnisend is directly represented in the detector dataset.
#3

Privy

PopupsDirect Detectify coverage

Privy remains relevant when lead capture, popups and simple email/SMS conversion flows matter more than advanced segmentation.

Best forSmall and mid-sized stores improving email capture quickly.
Detectify signalPrivy public scripts are directly detectable.
#4

Judge.me

ReviewsDirect Detectify coverage

Judge.me earns a place in the broader conversion category because reviews and star ratings are core trust signals on product pages.

Best forStores that need visible social proof fast.
Detectify signalJudge.me is one of the clearer storefront review app matches.
#5

ReConvert

Post-purchase upsellDirect Detectify coverage

ReConvert is useful when a merchant wants to grow AOV through post-purchase offers and thank-you-page conversion flows.

Best forStores focused on order value and post-purchase funnels.
Detectify signalReConvert is directly mapped in Detectify.

How to choose a marketing and conversion app

Do not install every conversion app at once. Pick the bottleneck: owned marketing, lead capture, social proof, upsells or retention. Marketing apps often leave public storefront scripts, so they are among the easiest categories for Detectify to classify.

Marketing and conversion app FAQ

Which marketing apps are easiest to detect?

Email capture, review widgets, popups, chat widgets and upsell blocks are usually easier to detect because they need to load in the browser.

Should stores install several conversion apps?

Only when each app solves a distinct bottleneck. Stacking popups, upsells and widgets without a plan can slow the store and confuse shoppers.

Detection note

Email capture, review, popup and upsell apps commonly load storefront scripts, making this one of the most detectable categories.