The Mindahome messaging system only sends messages and notifications to one email address. However it is possible to forward messages from one email address to another automatically. Below are instructions for Gmail and Hotmail. Other emails service providers would be similar.
For Gmail see these instructions: "Only forward certain types of emails" on this page:Â https://support.google.com/mail/answer/10957?hl=en
â€‹For Hotmail, Outlook etc: