About BluStream
The BluStream Product Experience (PX) platform gives brands a direct line to their customers after the sale. At the center of every interaction is Polly, your product's AI Advisor, a conversational AI trained on your brand voice and product knowledge to have personalized, two-way conversations with customers via SMS or any digital channel. Polly collects zero-party data that flows directly into Klaviyo, turning post-purchase conversations into smarter segmentation, more relevant flows, and higher retention.
The Brand
York Athletics is a third-generation D2C footwear brand making performance shoes designed for everywhere, gym, office, or night out. They sell direct via Shopify and run their post-purchase marketing through Klaviyo.
The Klaviyo Foundation
York had a solid post-purchase email program in Klaviyo, covering order confirmations, shipping updates, and promotional campaigns. The infrastructure was working. But every customer landed in the same nurture track regardless of how they actually planned to use their shoes.
The Gap
The data York needed to personalize at scale, including primary use case, workout type, and weekly wear frequency, did not exist anywhere in their stack. It was not in Shopify purchase data. It was not in Klaviyo behavior signals. It had to be earned through conversation.
The BluStream Layer
Polly engages York customers via SMS in the days and weeks after purchase, asking the questions Klaviyo cannot. Is this your first York shoe? Are you running, training, or wearing them to work? How many days a week? The answers build a zero-party data profile that lives in the customer record and flows directly back into Klaviyo.
The Klaviyo Payoff
Those profiles unlock segments that did not exist before. Runners get a cross-sell to York's running collection at Day 45. Gym users get the training collection. High-frequency wearers get a shoe rotation sequence followed by a second-pair offer. CSAT detractors get flagged for service recovery before they churn. Every flow runs inside Klaviyo. BluStream just gives it something real to act on.
"What surprised us most was the quality of the data. These aren't survey responses — they're real conversations. And being able to feed that zero-party data directly into Klaviyo means every follow-up we send is actually relevant to where that customer is in their journey."
— Rob Gibson, General Manager, York Athletics
The Result
Before BluStream, York had one post-purchase track. After BluStream, Klaviyo runs personalized flows based on how each customer actually uses their shoes, built entirely from zero-party data Polly collected through natural conversation. No new infrastructure. No surveys. Just smarter Klaviyo.
"I felt like York actually knew me, not just what I ordered, but how I was using the shoes. The recommendations I got actually made sense for how I work out."
— Jackie R, York Athletics Customer
Ready to see what Polly can do for your brand?
Every post-purchase conversation is an opportunity to learn something your Klaviyo data cannot tell you. BluStream makes those conversations happen automatically, and puts the data exactly where your team can act on it.
See Polly in action with a personalized Journey Preview, or talk to our team about what a BluStream integration could look like for your brand.