Comparison
Klaviyo and Customer.io are both in Retention. I copied the category, the job, the pricing note and the verdict from each listing. This page does not pick one.
Klaviyo · Customer.io · All Retention tools · Best AI Retention tools · Klaviyo alternatives · Customer.io alternatives
Klaviyo and Customer.io are both Retention tools. Klaviyo lists this pricing note: Free tier up to 250 profiles; paid plans priced by profile count. Customer.io lists this pricing note: From $100/mo (Essentials); Premium from $1,000/mo billed yearly. Klaviyo: The incumbent for ecommerce brands running email and SMS off store data. Customer.io: For product-led companies that want lifecycle messages triggered by what users do in the product. The full catalog verdicts are below. This comparison does not pick one.
| Field | Klaviyo | Customer.io |
|---|---|---|
| Category | Retention | Retention |
| What it does | B2C CRM for email and SMS marketing, built on ecommerce data, with AI agents. | Sends automated email, push, SMS and in-app messages based on user behavior and product data. |
| Pricing | Free tier up to 250 profiles; paid plans priced by profile count | From $100/mo (Essentials); Premium from $1,000/mo billed yearly |
| Best for | The incumbent for ecommerce brands running email and SMS off store data. | For product-led companies that want lifecycle messages triggered by what users do in the product. |
Best for is the opening line of that tool's verdict. The full verdict is below. Pricing is the catalog note, not a quote I calculated.
B2C CRM for email and SMS marketing, built on ecommerce data, with AI agents.
The incumbent for ecommerce brands running email and SMS off store data. Most DTC brands fit, so before you add another tool, check which core flows you haven't built here yet. Start with abandoned cart and post-purchase.
Sends automated email, push, SMS and in-app messages based on user behavior and product data.
For product-led companies that want lifecycle messages triggered by what users do in the product. It fits when engineering can send clean events, since every campaign keys off that data. Agree on event names and properties before you build the first campaign.