The standard setting when you send something from Mynewsdesk is that the “from’ address is hello@mynewsdesk.com.

You can customize the from address to your own email address eg. press@company.com. Go to the Settings menu and select Email settings.
To set up a custom “from address”, please read the technical instructions on how to configure DNS settings, giving us authorization to use your email address for your Mynewsdesk account.