Currently, there is a token - Internal Contact Record - that can be used for emails that are saved for automation. It is a hidden Hubspot Contact Property that generates a link to a specific contact record. It is used in an email for quick access to a given contact, instead of spending time looking for the contact through the search bar by name.
There is no such token for Companies. It would be very useful to be able to link a company record into an email for the same reason as it's useful to link a contact record. Furthermore, it would even be helpful to link an internalDeal Record. I believe this is a basic feature that we should get asap!