Currently, this is possible for manually logged emails, but not for emails that are automatically logged to HubSpot. This would allow users to capture context related to a specific email, such as offline conversations, phone calls, Teams chats, or other information that is not contained within the email thread itself.
For example, where a customer sends an email that is auto-logged, but a team member who has relevant context is not part of the email conversation. Rather than creating a separate note that becomes disconnected from the email, or inserting themselves into the thread unnecessarily, they could add an internal comment directly to the email activity, to help preserve valuable “hidden context”.