Connect Klaviyo effectively via Harmonizer

"Using Harmonizer, we are exchaning all of our sales and marketing documentation in real-time with our alliance partner Delta Airlines. Harmonizer is a proven, flexible and cost efficient a way of streamlining the collaboration with our alliance partners."

"We didn't know we had a problem, until we talked to the Harmonizer team. We were waiting for the longest time for integrations to be built between various applications. Thanks to Harmonizer we could get integrations up and running in no-time. The Harmonizer team showed me the inner workings and the back-end of their platform, so I am very comfortable with how Harmonizer works. The Harmonizer team is very reliable (always keep their promises) and clear in their communications. The end result is that everything has become a lot easier for me in my job, now that applications are integrated. "

"The Harmonizer team really want to deliver outstanding service. This is the most important thing and it is in line with what the customer wants. I think it is incredibly cool they are developing this amazing integration platform. Where needed, they orchestrate a custom integration and this truly enables all applications to talk to each other as they should. True craftsmanship! In addition, their API solution can solve issues precisely and they offer their service at a good price. I support and am excited about watching them grow their business."

"Various of our core systems didn't talk to each other in the past, and that was a real issue for us at Career Control. We were looking for a flexible tool to fix this issue, and found a perfect match in Harmonizer! We were pleasantly surprised by how fast the integration was up and running. Having the integration in place has enabled us to uncover important actionable insights, and allows me to use our budgets much more effectively. We would highly recommend Harmonizer to others, specifically because of its flexibility and the team's direct, proactive style of communication. The collaboration was excellent. "

"I had some doubts at the start with Harmonizer, because it sounded too good to be true. The Harmonizer team was offering an easily scalable SaaS solution for integrations, which enables anyone - without any technical knowledge - to integrate applications securely. In the end, it turned out to be even better than promised! This results in an amazing experience for our customers as well. Another great advantage for them is the pricing: an affordable, fixed monthly fee without any hidden charges. We view our partnership as a true value add to what we are able to offer our customers. We have worked with the reliable Harmonizer team for a few years now, and our collaboration is always very pleasant. "

"Before we started working with Harmonizer, we had to fill in our customers' data by hand. That was really a lot of work! It took us a lot of time and it was very easy to make mistakes. When we found Harmonizer and started the project, it turned out that our case was more complex and extensive than we initially thought. In order to explain the processes to my client in a simple and understandable way, I got detailed explanations about the technical part from Guido and Thom. They both really take the time to explain things in an understandable way, and I always feel welcome when I have a question."

"By partnering up with Harmonizer, we are able to offer any integration our customers ask for. This way, our social intranet platform is integrated even better with the organisation of our customers, leading to the best user experience."

"After our first conversation with Guido and the Harmonizer team, we felt we were in capable hands straight away. Both in terms of the solution that was presented as well as the approach. Guido and the Harmonizer team really know what they are doing when it comes to integrations. This instilled confidence. Much needed, because with a back-office process change like a systems integration, a lot of things can go wrong. The Harmonizer team was able to answer my questions and address my concerns really well. They were really proactive to work with. Now that the integrations are live, I don't have to worry about creating, maintaining and deleting user accounts. It all happens in the background, without my involvement. I can't recommend this service highly enough!"

"We work with Harmonizer whenever a client requests an integration to another application. The Harmonizer team resolves these requests with ease. And, another important advantage is we can always call them - they will pick up, and quickly answer your question or resolve your issue. I was always worried about outsourcing integrations, until now. Harmonizer has dissolved all my doubts by delivering an outstanding service."

"Before we found Harmonizer, we had to manually enter data from our newsletter management system Hellodialog in our CRM system. This was a laborious process, especially since we would do this for hundreds and sometimes thousands of customers at a time. After talking to Guido and the Harmonizer team, we started the integration project immediately. We had expected to spend a lot of time to get the integration up and running. This wasn't the case, and within a few weeks it was working swimmingly! Contrary to how some other vendors operate, the Harmonizer team is incredibly invested and makes you feel appreciated each time you interact with them, including when you have questions. We are very happy with Harmonizer's managed service!"