HubSpot has (good feature) forward email to HubSpot
Ref: Log email in your CRM with the BCC or forwarding address
BUT why not have essentially the same functionality as a button to push within the HubSpot Sales app (for Outlook)?
e.g. “Store this email in HubSpot” could be a MUCH better UX.
If contact known, the app would upload the email and associate.
If unknown, invite user to create a new Contact.
Awesome!