Case Study: Buffer achieves higher engagement and fewer unsubscribes with Customer.io

Email marketing that deserves adouble tap Inside Buffer’s strategy

Buffer, the social media management platform, needed to make lifecycle email marketing feel personal while scaling to support 100,000 new users each month across 10+ social networks. Working with Customer.io, Buffer aimed to deliver timely, relevant messages based on real-time customer data instead of sending one-size-fits-all emails.

Customer.io helped Buffer use integrated data from Segment and Mixpanel to trigger personalized, event-based email journeys with dynamic content and experimentation. The result was a 41.5% reduction in unsubscribe rates, a 28% increase in click-through rates, and a 22% increase in open-to-conversion rates.

Buffer

Sophie Gil

Audience Development Lead