"The email address associated with your Google Account is the address you use to sign in to Google services. This email ...
In recent days, Google has quietly started to roll out a way for users to change their Gmail addresses ending with @gmail.com and keep all their emails – no matter how old their account.
Google has finally answered users' cries, allowing Gmail users to swap out embarrassing teenage email addresses.
Google rolls out option to change Gmail addresses. Here's how to change your Google Account email address and transitioning to a new Gmail address.
Google says on a support page that it is "gradually rolling out" a new change allowing users to change their Gmail address.