Case Study: Klaviyo achieves reliable, scalable email and SMS delivery with Twilio SendGrid

How Klaviyo Helps Retail Businesses Build Deep Connections with Customers

Klaviyo, a marketing platform for retail businesses, needed a reliable and scalable email delivery and SMS solution so it could focus on building better customer experiences instead of managing messaging complexity. The company used SendGrid’s Email API and Twilio’s messaging APIs to support its growing email and text programs at scale.

SendGrid helped Klaviyo deliver messages with strong reliability and speed, while Klaviyo used the platform to power personalized, automated customer communications. With SendGrid, Klaviyo consistently achieved a 99.94% delivery rate, sent around 10 billion emails per month, and supported high-performing campaigns with open rates up to 46.94% and click rates up to 9.20%.

Klaviyo

Hongbin Yin

Engineering Manager