Klaviyo

Klaviyo is a Boston-based marketing and customer data platform for consumer brands. It combines email and SMS campaigns, WhatsApp and mobile push messaging, behavioral segmentation and automated flows with a built-in customer data platform, and the company now describes the product as a B2C CRM that also covers analytics and customer service.

The platform is built around the Klaviyo Data Platform, which stores profiles and events and feeds segmentation, automation and reporting. Personalization tools include RFM scoring, predicted customer lifetime value, multi-touch attribution and AI-selected send audiences. Separate products add a customer hub for shoppers, an AI helpdesk with a shared inbox across email, chat, SMS, WhatsApp and Instagram DMs, and an AI customer service agent pre-trained on a brand's own data.

Enterprise data work sits in the Advanced CDP tier: identity resolution for returning visitors, custom objects for records such as subscriptions or memberships, no-code data normalization, and serverless functions that run against captured events. An app marketplace connects Klaviyo to more than 350 other tools, and the company reports more than 205,000 brands on the platform.

Klaviyo was founded in 2012 as a customer database and lists offices in Boston, Denver, San Francisco, London, Dublin, Sydney, Paris and Singapore. Plan prices are not shown on the pages crawled here, so subscription cost by profile count and message volume has to be confirmed on the pricing page or with sales.