Ranked by real store adoption — StackDex detects which apps are actively installed on Shopify stores through code analysis. These rankings show actual market preference, not inflated App Store install counts.
Turn email into your top revenue channel with personalized, configurable GIFs that seamlessly integrate into Shopify and Klaviyo campaigns and automations.
Boost sales with an automated AI email marketing app, abandoned cart flow, AI email campaigns,15+ languages, 1-click setup, abandoned checkout, pop-up, & more
Automate back-in-stock alerts with personalized emails and smart workflows. Recover lost sales, segment customers, and track performance with ease.
Maximize sales with Uppush: Abandoned Cart Recovery, Abandoned Checkout Recovery, Browse Abandonment, Back-in-Stock alert... with Web Push & Email Marketing
Grow your marketing list and convert new leads with Shopify’s free customizable email capture tool. Works seamlessly with Shopify Email, automation, and more.
Free Email Marketing apps in this list
3 of the top email marketing apps offer a free plan — no monthly fee required.
Klaviyo
Abandoned Cart Email Marketing
Grid & Pixel Email‑SMS‑PopupsFrequently Asked Questions
Which email marketing app is most used by Shopify stores?
Klaviyo is the most widely used email marketing app based on StackDex real store detection data. It's installed on 3508.0% of stores in our dataset.
How is "trending" different from highest rated?
Trending apps are ranked by actual usage — how many Shopify stores have the app actively installed. Rating is self-reported by merchants, while adoption data shows real market preference. A 4.5-star app used by 15% of stores is more popular than a 5-star app with 0.5% adoption.
How often is this data updated?
Our store adoption data is refreshed regularly through ongoing detection across Shopify stores. The trending rankings reflect what stores are using right now, not historical install counts.
Why do some apps have much higher adoption than others?
Several factors drive high adoption: being available for free, strong word-of-mouth in Shopify communities, featured placement in the App Store, and solving a near-universal need (like reviews or email). The top email marketing apps typically address core business requirements that almost every store shares.
Trending by category
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