CartSync alternatives
12 email marketing tools compared on data from stores OngoingAI observes — including 2 running CartSync. Adoption, platform split and growth, not vendor claims.
Every CartSync alternative, side by side
Ordered by relevance to CartSync · 30d net counts confirmed adds/removals only · overlap = share of CartSync stores also running it
| Alternative | Stores observed | 30d net | Primary platform | Overlap | Rating | Pricing |
|---|---|---|---|---|---|---|
| Retention.com | 571 | +30 | Shopify | — | — | — |
 Mailchimp Email SMS Marketing | 35,832 | +183 | Shopify | — | 4.8 | Free plan available |
 Omnisend Email Marketing & SMS | 13,072 | +95 | Shopify | — | 4.7 | Free to install |
| Mailchimp for WooCommerce | 10,073 | +8 | WooCommerce | — | — | — |
 Privy ‑ Email, SMS & Pop Ups | 7,063 | +25 | Shopify | — | 4.5 | From $24/month |
 Brevo | 5,314 | +164 | WooCommerce | — | — | — |
 MailerLite | 3,366 | +168 | Shopify | — | — | — |
 Bluecore | 29 | +9 | Shopify | — | — | Free to install |
| MailPoet | 1,307 | +31 | WooCommerce | — | — | — |
 ActiveCampaign Marketing | 1,159 | +44 | WooCommerce | — | 4.5 | Free trial available |
 Constant Contact | 856 | +82 | WooCommerce | — | — | — |
 Klaviyo: Email Marketing & SMS | 79,790 | +565 | Shopify | 100% | 4.7 | Free to install |
Fastest-growing CartSync alternatives
Confirmed net stores added over the last 30 days — observed changes, not new coverage
Alternatives by ecommerce platform
Where each alternative's stores mostly run
More comparisons
Retention.com alternativesMailchimp Email SMS Marketing alternativesOmnisend Email Marketing & SMS alternativesMailchimp for WooCommerce alternativesPrivy alternativesBrevo alternativesMailerLite alternativesBluecore alternativesMailPoet alternativesActiveCampaign Marketing alternativesConstant Contact alternativesKlaviyo alternatives
Frequently asked questions
Ranked by observed store adoption, the most widely used CartSync alternatives are Klaviyo, Mailchimp Email SMS Marketing, Omnisend Email Marketing & SMS, Mailchimp for WooCommerce.
Klaviyo is the most widely adopted CartSync alternative we track — observed on 79,790 ecommerce stores, versus 2 running CartSync.
Klaviyo gained the most confirmed installs over the last 30 days among the alternatives we track (+565 net confirmed stores).
Mailchimp Email SMS Marketing holds the highest rating among well-reviewed alternatives — 4.8 out of 5 across 1,486 reviews.