I change my email address in my personal account and was hoping the my GeoNet account would update but it didn't.
Even under GeoNet edit profile it will not let me.
Hi Bill, There isn't a way to change your email address within GeoNet. GeoNet accounts are pulled through the Esri account setup. If you change your Esri or arcgis account email address it may break your GeoNet access. Please email me at email@example.com with your current account user id and email address and the one you are trying to change it to and I will work with the Esri account team to investigate. Thanks!
Didn't the suggestions here work?
Setup and Change GeoNet Email Preferences
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