Hi @mark Payne @Matt Clarke, We have a NiFi – Kafka – Zookeeper clustered configuration (shown in figure) and we need to get emails through SMTP protocol, using the NiFi ListenSMTP process to send the incoming emails to Kafka. We need to get the emails without generating duplicates. Considering that we need to have only one entry point to the service, but having 2 NiFi in the cluster environment, we need to understand how to configure this in order to work the way we need. Regards, Mauro. ... View more