My account was 8 years old and had my personal and very important emails with my poems and many other important things. They deleted all of my emails from everywhere: Inbox, Sent items, Trash, without any notification or reason justified. Now when i am trying to contact their support center to help me with the issue and try and return my mails, nobody is responding.
If this is the way such a big email account group work, i would never suggest anyone to use Yahoo Mail account for their personal / professional work.
Also, in my effort to get my mails back, i read around 100s of reviews, where people complained that their email also had got lost from their yahoo account without any notification.
If anyone from Yahoo team is reading this, please try to mitigate this issue