Cox email switch to Yahoo disaster

I agree; this could have been handled in a much better fashion. The transition to Yahoo makes you think you either have to upgrade to their paid version or pay for technical support. 

I use Thunderbird for my email client. I followed these instructions to perform the changeover:

https://help.yahoo.com/kb/new-mail-for-desktop/password-sln15241.html

This is in addition to changing the settings for POP, IMAP and SMTP in your email client.

As an aside, I pay for Microsoft Office 365 (yearly subscription). With the subscription, you can sign up for outlook.com email addresses. I set up a few accounts for my most critical emails.