Klaviyo Raises $320M in Series E

Klaviyo has successfully raised $320M in a Series E at a $9.5B valuation led by Summit Partners, Accel.

Company Overview

Klaviyo is a SaaS company headquartered in Boston, MA, founded in 2012 with 1800+ employees.

Marketing automation and email platform for e-commerce

Fundraising Details

• Amount Raised: $320M
• Round Type: Series E
• Valuation: $9.5B
• Date: 2025-10-10
• Investors: Summit Partners, Accel

About Klaviyo

Marketing automation and email platform for e-commerce The company is positioned in the SaaS sector, serving a growing market with innovative solutions.

Key Information

• Headquarters: Boston, MA
• Founded: 2012
• Team Size: 1800+
• Industry: SaaS

What This Means

This funding round demonstrates strong investor confidence in Klaviyo's vision and execution. The capital will likely be used to:

• Scale Operations: Expand the team and operational capacity
• Product Development: Enhance existing products and develop new features
• Market Expansion: Enter new markets and strengthen presence in existing ones
• Technology Investment: Invest in infrastructure and technology capabilities

Industry Context

The SaaS sector continues to attract significant investment as companies innovate to meet evolving market demands. Klaviyo's successful fundraising reflects the strong fundamentals and growth potential in this space.

Valuation Milestone

Reaching a $9.5B valuation marks an important milestone for Klaviyo, positioning the company among notable players in the SaaS industry.

Looking Ahead

With this new capital, Klaviyo is well-positioned to execute on its growth strategy and continue building innovative solutions in the SaaS space. The company's trajectory will be one to watch as it deploys this funding to achieve its next phase of growth.

This fundraising news was reported on 2025-10-10. For more information about Klaviyo, visit their headquarters at Boston, MA.