Verizon sent out a notice that it is shutting down it's email and migrating existing customers to AOL. They are not notifying everyone at the same time. If you do nothing, you’ll lose access to your mail, contacts and calendar on the date specified in your e-mail notification. You don't have to lose your Verizon email address. Verizon’s notice outlines the two options: have your mail moved to AOL and keep your address or “try another provider” and lose the address.
AOL is owned by Verizon now so Verizon is moving it's email over to AOL. 4.5 million e-mail accounts are involved or which 2.3 million of which are active, meaning they’ve been accessed in the last 30 days. The company had begun deactivating some mail accounts that had not seen any activity in 180 days.
See the migration facts below form Verizon and AOL.
Here is the Verizon page which goes into detail on the email move:
Here is information from AOL on the migration: