I am a Computer Administrator for many small businesses. I have pushed COX over all others for as long as COX (even Home) has existed. I of course have worked out the details to configure COX migrated eMail to the Yahoo under IMAP, POP, SMTP for Outlook, K9, Thunderbird. I wanted to just forward my eMails to my own servers, but that costs I think $5.00 / month / account. I did NOT sign up for this. I have also experienced many failures with SMTP, time outs on IMAP, non-received eMail by the recipients, and the Yahoo servers will not respond with delivery receipts to help with testing. And of course, support is abysmal.
I would support a class action suit against COX regarding this Yahoo eMail migration and violation. COX has violated everyone's privacy and security my divulging private information to the Yahoo Advertising Machine such as eMail Address, Cell Phone Number and passwords. Not to mention access to the contents of the eMails that we entrusted to COX. To actually accept Yahoo's terms of service, they state something like we'll only use your eMail and Text for appropriate advertising; well, NONE is the appropriate amount of advertising I want to receive from Yahoo. I did not agree to nor authorize COX to violate my security information and send it to Yahoo.