The five-week period at a 1.5% response rate was not a failure. It produced a genuinely useful data set and, just as importantly, it surfaced the structural insight that the tracking email was the wrong channel. But the lesson is to accelerate that diagnostic loop wherever possible.
A few principles from the work at Kunden Erlebnis:
First, treat every touchpoint as a hypothesis, not a decision. The tracking email seemed like a logical choice because it already reached the right person at a relevant moment. That hypothesis turned out to be wrong for this specific customer base. Designing for testability from the start means you can adjust faster.
Second, watch for the 'automatic email' trap. Any message customers receive on a high-frequency schedule carries the risk of becoming invisible. The more predictable the email, the more likely recipients process it on autopilot. A survey link inside that email does not benefit from the customer's attention. It inherits the email's invisibility.
Third, a low response rate is a question, not an answer. The right follow-up is not 'our customers are not engaged.' The right follow-up is 'what would need to change about the timing, the channel, or the message for this to work?' That distinction, between blaming the customer and examining the system, is where the Bewährte 3-Phasen-Methode begins: with a clear-eyed look at what the data is actually telling you.