Yes, you can keep track of your home mortgage. When you setup the debt account, make sure to choose MortgageM as the account type. Once you change the account type to mortgage, there will be an additional field labeled Escrow, Taxes & Insurance available. Use the principal payment amount as the Monthly Payment.
Tip: Instead of adding the mortgage as a debt account, you can use it as a bill account (if you use the Bill Management module) instead. Typically, the mortgage is the last debt you pay off and since the balance is usually high, it can keep your debt payoff progress stats from moving very much. I recommend keeping mortgages off of your payoff plan until you are completely done with everything else.