If you are having probems with your mail where it is still there but it says
that it can not be found and you are trying to do a bulk delete I have found
the solution. I tried to delete them one by one which worked and then emptied
the recycle bin. But, if you do a select all, mark them as UNREAD and then
delete them all it works. I didn't figure this out till I had deleted them
one by one for about 700 emails. This error occurred when my email froze when
it was deleting tbe messages before it finished. I hope this helps some
people.