You'll get an email from me that says:
Congrats on upgrading your challenge experience!
The "From name" is me, Ben Saltzman.
And the "From Address" is firstname.lastname@example.org"
You're going to want to "whitelist" that email address so it doesn't go to spam or the promotions folder.
That email will have additional details about your upgrade.
Be on the lookout for this one!