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The Stack

CRM, Lifecycle & Loyalty

Member ratings open 30 November 2026
Tool · The Stack

Chief’s pick

Klaviyo

Klaviyo

Email, SMS and push built on first-party ecommerce data, with deep Shopify and marketplace integrations.

https://www.klaviyo.com

Klaviyo

crm-lifecycle

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Who it’s for

DTC and retail brands, and increasingly B2C beyond ecommerce.

Pricing

Free plan · paid by contacts

6

One of The Digital Chief’s ten recommended tools · Editorial, never paid

Lifecycle email and SMS built on first-party data, the only kind that survives the next privacy change.

Listed on adoption, not on payment. The link above goes to the vendor’s own site; an affiliate link would carry an (Ad) label before the name. Vendors can correct a fact through the contact page. Nobody can buy or edit a rating.

The directory

Thirty-two tools, thirteen desks.

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