I lost 15 years of memories and documents. I didn't login to YahooMail for a year, and it was all gone when I tried to login after that. Everything was gone without a single warning to my secondary email or linked mobile number.
I understand they simply wanted to get rid of all free users asap. Someone at Verizon management came up with this stupid idea of deleting all inactive accounts. What a way to ruin a brand.
Not sure if it's related but they also have a Customer Data Security Breach Litigation Settlement ongoing. If you had a Yahoo account at any time between January 1, 2012 and December 31, 2016 and are a resident of the United States or Israel, you may submit a claim for a cash payment up to $358.80 , and You may additionally provide documentation or proof to receive reimbursement of up to $25,000.00 in out-of-pocket losses. [1]