After Conversation Work (ACW) Time is a standard contact center metric that measures the time an agent spends completing tasks immediately following a customer interaction. The scenario explicitly describes these tasks as sending follow-up emails and finalizing case notes. Tracking ACW time provides direct insight into how efficiently individual agents complete this "wrap-up" work. A lower average ACW time for similar case types can indicate higher agent efficiency, which directly addresses Cloud Kicks' requirement.

A. Total Emails Sent: This is a volume metric, not an efficiency metric. It measures the quantity of output but provides no insight into the time or effort required to produce it.

B. Call Abandonment: This metric reflects the percentage of callers who hang up before connecting with an agent. It measures queue performance, not an individual agent's post-call efficiency.

1. Salesforce Help, Set Up After Conversation Work for Voice: "Give agents time to wrap up work after a customer call ends. For example, agents can use this time to send follow-up emails, update a case, or finalize their notes. This period is called the After Conversation Work (ACW) time." This document directly links the scenario's tasks (emails, notes) to the ACW feature.

2. Salesforce Help, Service Cloud Voice Metrics: The "Voice Call Metrics" section lists "After Conversation Work Time" as a key metric. It is defined as the time an agent spends on wrap-up work after a call. This confirms it is a standard, trackable metric for measuring the activity described.

3. Salesforce Help, Glossary of Contact Center Terms: Defines "After-Call Work (ACW)" as "Work that is necessitated by and immediately follows a call. ACW includes entering data, filling out forms, and making outbound calls necessary to complete the transaction." This definition aligns perfectly with the need to measure efficiency in finalizing case-related tasks.