
About Klaviyo
Klaviyo is a customer marketing platform built around email, SMS and customer data. It is popular with online stores that want messages to respond to what customers do.
What it does
Customer data from your store and channels is combined in one place, so email, SMS, push and WhatsApp messages can react to actions such as browsing or purchases. Composer is an AI agent that finds revenue opportunities in the data and plans campaigns for approval. A customer agent answers support questions, and the platform offers templates, reviews and social messaging. An MCP server lets AI tools work with the same data.
Key features
- Email and SMS campaigns built from customer data
- Composer AI agent that plans campaigns
- Customer Agent for support questions
- WhatsApp, push and reviews in one place
- MCP server for AI tools
Who it's for
Klaviyo suits ecommerce brands, direct-to-consumer marketers and CRM teams. It is best for businesses that have enough customer data to make personalised messaging worthwhile.
Pricing and good to know
Klaviyo has a free plan for smaller lists, and paid plans scale with contact numbers and features. Costs can rise as your list grows, so check the pricing for your size before committing. Agents work best when they are approved step by step, which the site says is part of its design.
Highlights
- Email and SMS campaigns built from customer data
- Composer AI agent that plans campaigns
- Customer Agent for support questions
- WhatsApp, push and reviews in one place
- MCP server for AI tools












