On the Yahoo mail page on your Inbox, at the top beside the "settings" button is the "switch view" button. Select it. Then on the drop down menu select "In Scrolling list" (with preview) recommended. Then refresh your Inbox and select the box above your first email to delete all, and then all of them will be deleted. I know this works because I had 3000 emails and I used this method to delete them all the same time.
at my head
My yahoo mail inbox message says privacy error. Why?
Log into yahoo and click "check mail." There should be an inbox with new messages in it.
what the last person failed to mention is that the most emails you can delete at one time is 200. I have 32,000 so...
Yes
Yahoo Mail is saved forever, unless you delete it.
how i can lock the yahoo mail draft folder/inbox folder etc
Go to settings click mail and delete account. It logs you out it doesn't delete your actual account.
No Im sorry you can't
of course you can if you couldn't you probably wouldn't be able to find your mail
At the Yahoo inbox you could find the question "switch to the New yahoo! mail" exactly at the right corner click it up and by all mean if you go through you could be let to the yahoo beta. that's the way.
just exit out of it and it should delete right away.