You have the possibility to add a partner email to your account in your profile (go to My account > My profile) under the "Confidential information" tab:
Here you can input the email of your partner, a secondary email address, the email of your roommate, etc...
To avoid missing on home exchange opportunities, messages from your exchange partners or alerts from HomeExchange, you can add another email to your account so that you receive these alerts in more than one inbox.