I had heard that this was happening through QVC, of all people.
QUOTE.
Effective April 28, 2017 Verizon will no longer support verizon.net email addresses. You'll be asked to convert to AOL Mail or create a new email address with another provider.
We want to ensure you have no interruption in receiving QVC emails, including your order & shipping confirmations, Customer Care correspondences, and promotional emails.
Please be sure to convert your email address to AOL or provide us with another email address. If you change your email address, visit our Email & Mobile Preferences page to update. You may need to select Email & Mobile Preferences on the left to update. Don't forget to submit your change at the bottom of the page.
Please visit
www.verizon.com/email for more information.
UNQUOTE
Of course, I called Verizon and said What? Why am I hearing this from QVC and not from you? The guy explained that they're not just dumping Verizon.net all at once for all their millions and millions of customers - instead, they're doing it in buckets of people over the course of one year. (People are on different servers all over the country.) The migration to AOL actually started in March. And when it's my turn, I will receive an email well before my Verizon.net stops working (unless I take the actions they said to do if I want to keep Verizon.net.
Sure enough, I got my notice last week and followed the instructions and am now fully migrated to AOL and will be able to keep the address for free and forever. I actually changed from POP to IMAP, by preference.
Bottom line: If you haven't received the notice directly from Verizon: IT'S NOT YOUR TURN YET.