customer

“Customer.io can do what other marketing automation tools can’t—take in millions of events from users per day, segment through them almost instantly, and use any campaign action imaginable to create workflows.”

“Onboarding our last few brands took days, not the weeks the first one took. Every workflow we built for Nissan was already there for Volvo. That's not integration, that's compounding.”

“GoChat talks to the customer. Customer.io is the brain. Every decision—who to follow up, when, with what message, which salesperson takes it, when to escalate—lives in Customer.io. That separation is what let us scale without rebuilding.”

“We were selling tens of thousands of vehicles a year and had no idea what happened between a WhatsApp lead and a signed contract. The funnel existed, we just couldn't see it. Today we follow every lead from the first message to the SAP invoice, across all ten brands, in one place.”

“The cool thing is, we were able to do this in about three days. Before Customer.io, putting something like this together would take two weeks. We are able to send out personalized content for our customers 4x faster than before.”

“A/B testing now is very fast for us. We have been able to conduct 7x more tests than we did last year, increasing our overall conversion by 2.7 times within the first 4 months of using Customer.io. This makes our executive team very happy. Everyone’s happy. Having tangible numbers to justify why we went with a specific message or campaign flow is really valuable to me.”

“Now we have all of the data and tools we need, which enables us to quickly build [gift notification emails] in the campaign builder with no additional engineering support required.”

“Customer.io was super easy to start with, and also super robust to scale. Some platforms are either super robust but difficult to start, or they're very simple but you can't do complex things. We needed flexibility to get data in and out easily, and the capability to handle sophisticated use cases.”

“Design studio perfectly blends that for us in a way that we haven't seen anywhere else.”

“The sales results are real. Goodlight AI and Customer.io are one of the best business decisions we made in 2025.”

“We needed to send millions of hyper-personalized emails every month, but no other ESP was able to effectively handle a situation where every one of those emails was different. Customer.io was the best choice for us to enable deeper personalization than any other service. Combined with their excellent solutions support, they have become our preferred partner at Goodlight AI.”

“We’ve onboarded quite a few teammates at Livestorm, who had never used Customer.io before, and I love how easy it is to get them up to speed on it.”

“I’m often amazed by some feature I didn’t know was possible, or just the fact that you can send to web hooks or have API calls within the campaign.”

“Customer.io expands a lot of possibilities. You can push it really, really far.”

“I really appreciate the experience of creating a campaign. It allows us to visualize the whole campaign straightaway, and when it comes to analyzing a campaign by itself, I never need to do that on a workflow separately from Customer.io.”

“Through data analysis within Customer.io, we’re able to learn about our lead acquisition strategy and understand whether it’s worth it to focus on a specific group or tactic, and if it is worth our time and money.”

“Customer.io is our main source of truth for anything related to marketing or eCommerce details. We take actions taken by leads and customers on our website, app, and Shopify, and funnel it into Customer.io instead of manually updating anything.”

“Customer.io gives us leverage. Two founders can run follow-up at the scale of a full growth team. The workflow felt like having an extra teammate who never gets tired.”

“Customer.io lets us move at event speed. Every lead gets instant attention while we stay focused on real conversations. The moment someone scanned our QR code, Customer.io took over. No lead ever slipped through the cracks.”

“Email can’t be our number one channel forever. As a mobile-first app, we need a holistic journey across web, app, and messaging. Customer.io gives us the tools to make that happen.”

“We discovered that users were most likely to refer early in their journey, so we used in-app to surface that offer when they were seeing value.”

“Even a small lift in conversion is great, but seeing meaningful increases in behavior during trial is foundational for understanding how to start improving conversions and long-term retention.”

“The holdout feature is incredibly powerful. It’s so much easier than manually splitting test groups, and it integrates directly with our reporting in Amplitude.”

“Because we have every event flowing into Customer.io, we were able to build a journey that adapts to what each user is actually doing—or not doing.”

“We actually saw slightly higher cancellations with no incremental lift to engagement using the generic flow. It didn’t acknowledge where users were in their journey or help them move forward. That’s when we knew we needed to take a different approach.”