First, log into your account on ProfNet.
It will open to My Inbox (with active leads).
Click on "My Profile". A new page will open.
You'll see a field called "Email ID" midway down the page.
If you'd like to change the email address for your leads, simply change the email address in that field.
Once you're done, click on the green UPDATE button at the bottom and wait for an onscreen message indicating that your changes were saved.