"Customer IO stands out for its powerful automation capabilities and behavioral messaging tools. It allows us to create highly personalized communication workflows, improving engagement and retention effortlessly."

"We made the switch to Customer.io after trying out Loops and Userlist, and it’s been a great decision. It’s powerful enough to handle all our SaaS communication needs, yet still easy to use. It works smoothly across multiple integrations and makes personalizing content simple. On top of that, the support team is always quick to respond and super helpful."

"We use customer.io to communicate with our customers and love their service!"

"Best tool for email marketing!"

"Enhance our customer service and streamline in-app operations."

"For the "Free for 12 months" Startup Program, offering us precise control over our messaging and user engagement. This has been instrumental in tailoring experiences that resonate with our community."

"We use customer.io to communicate with our customers for almost all transactions and campaigns."

"When it comes to email automation, Customer.io is our secret weapon. The level of control and granularity it provides for building workflows beats the cookie-cutter approach of others. It empowers us to create hyper-personalized campaigns triggered by actual user behaviors, driving results without drowning in complexity."

"Customer.io powers our automated drip campaigns, helping us deliver personalized messaging and optimize customer engagement across multiple channels at scale."

"Amazing tool for communicating and segmenting a group of users."

"Customer.io is the perfect in-app and marketing communication for SaaS apps!"

"It is the CRM that we needed to communicate with our customers. It is a developer first kind of approach where we can setup events and communicate with our customers through various channels."

"Added 20% Retention through planned notifications!"

"The best data-driven PLG onboarding tool in the world."