Department-specific Emails configuration
In LiveAgent, you can define outgoing email accounts (https://support.liveagent.com/988633-Configuring-Outgoing-Email-Accounts) from which agents are allowed to send replies, separated for every department, or force replying to tickets in a specific department only from one particular outgoing email account. These settings can be found in Configuration > Departments (https://support.liveagent.com/420769-Departments) after clicking on the Edit button of the chosen department.
General co...