Allow personalized replies to apply only to agents

When personalized replies are enabled (Enabling personalized email replies – Zendesk help), the setting applies to both end users and agents. Including the support address name after the end user name in the From: line on email notifications can falsely imply that the end user is a member of the support team associated with that support address.

I would like the option for this setting to apply only for agents, so email notifications triggered by end users do not include the support address name. Alternatively, the appended support address name for email notifications triggered by end users should include "reply via" or another customizable string.

For example:

From: Agent Name (Support Address Name)

vs

From: End User Name

alternatively:

From: Agent Name (Support Address Name)

vs

From: End User Name (reply via Support Address Name)