Unfortunately not. You'll need to make an additional request to GET /crm/v3/owners/{ownerId} to pull the email (and other information if needed i.e first and last name). See Owners API for more information.
I believe the reason for this is how the "Deal Owner" property (or any owner property for that matter) works in HubSpot. It is storing the owner ID behind the scenes.
Unfortunately not. You'll need to make an additional request to GET /crm/v3/owners/{ownerId} to pull the email (and other information if needed i.e first and last name). See Owners API for more information.
I believe the reason for this is how the "Deal Owner" property (or any owner property for that matter) works in HubSpot. It is storing the owner ID behind the scenes.