Why are the same contacts billed multiple times when they are synchronized with different destinations?

We understand that from a user's perspective, one might expect to be able to synchronize the same source contacts with as many destinations as desired for the same price.

We would like to enable this as a manufacturer. Unfortunately, due to technical and financial constraints, this is not feasible. When the same address book source is synchronized with multiple sync.blue® connections with different destinations, the technical resources required for it (server capacity, runtime, support effort, etc.) triple, which equates to three customers each with a single connection.

Therefore, we explain this billing method in advance on the pricing overview and also here with detailed examples.

However, the current pricing model already takes into account the synchronization of many contacts: the price per contact decreases significantly with increasing contact quantity.