Yep, please do this! Also requested at least here:
https://community.hubspot.com/t5/HubSpot-Ideas/Tracking-Marketing-Email-Responses/idc-p/173716#M13129
and here:
https://community.hubspot.com/t5/HubSpot-Ideas/Track-Email-Responses-in-Marketing-Workflows/idi-p/30995