A reply is credited to the mailbox that sends it. So timetoreply can tell an inbox owner’s reply times apart from those of a delegate, such as an assistant, or a colleague the email was passed to.
Example
Section titled “Example”- A customer emails you.
- You forward the email to Agent 1.
- Agent 1 replies to the customer.
The first reply time is credited to Agent 1.
timetoreply still tracks the rest of the conversation too, including how long you took to forward the email and how long the customer takes to reply to Agent 1.