Final answer:
A mail contact service encounter is expected to have a low sales opportunity.
Step-by-step explanation:
In the service-system design matrix, a mail contact service encounter is expected to have a low sales opportunity. This is because with a mail contact service, there is no face-to-face interaction between the customer and the server, which reduces the opportunity for any sales transactions to occur. The focus of a mail contact service is more on providing information or resolving customer queries through written communication.