Seems like Google has a new feature in the Google Search Console for alerting webmasters if someone changed their email address in their account. The alert is named "email settings changed in Search Console."
The message explains that now Google will send notifications to the global email and if it changed, you will be notified. Google explains:
As part of a change in all Google products, Search Console now sends all emails to the email address specified in your global contact settings. If your Search Console setting was different than your global setting, you will begin receiving Search Console emails at the new address specified in your global settings.
You can view your global email over here. Google added:
As of today, we will send all Search Console notifications to the email address chosen on your Google contact settings page. You can change your address on that page, but you can no longer specify an address used only for Search Console messages.
Here is a screen shot from Sunny K. Ujjawal on Twitter:
Forum discussion at Twitter.