My yahoo mail account is empty

I suggest you contact the yahoo help, they may be able to tell you what happened. There is also the possibility they may be able to recover your mails, the thing is you should do so as quickly as possible as the longer you wait the harder it is to recover. All the best.

I guess my answers for this post comes late already. If such things happen, there is always a possibility that something is wrong with the server. In other words it could probably be because of yahoo. So perhaps the next time you check and you get the same result, you could hang on for while and try it again in a little while. There are even times that I cannot access my yahoo mails. But in a short while, I can, sometimes I cannot attach some files.. Perhaps there are now to many people using yahoo and sometimes things like this happen due to system error or to much traffic in their system.

I have some problems with yahoo mail today too. I can't even sign in today. And it also happened last week as well. I can't log in and that's for all of my yahoo accounts. Maybe just yahoo has some problems. You should contact them and ask what happened. Good luck! :)