I have been using Yahoo mail for several years. I switched over to the new Beta mail and love it. It's a lot like Outlook in some ways. I use it for my main account. I have a gmail account, but have not done much with it yet.
Last year when I upgraded my Internet connection, I chose not to go with the Yahoo email account that was prompted by the software that came with the account.
I kept using Outlook, and I have a hotmail account as a backup. I found that the new Beta hotmail account seemed really slow, so I stayed with the older version.