Actually, the last part I don't think is fully correct or I am not sure if you referring to the same thing which I will point out here. Currently, we are using the multibrand and we do have Brand name's(corp 1, corp 2, corp3, etc.) set for each of our brands, but still, the name in the To: section of the tickets is taken always from the Account name:

We are fine for the page tab next to the favicon to be always taken from the account name but in the tickets in the different brands, the name for the To:(the email address which opens tickets) should be taken from the brand name.

Can you advise if this can be achieved?