ELvisisdog
i know how frustrating it is when you could have literally thousands of unwanted email in duplicate in cache.
I got rid of the problem, but you need to reset your iPad and start afresh. I then installed Mymai from google (SeeMy letter on the 12th January) this is tthe only way possible you will rid the problem for good.
There is no little button or circles on the iPad. There may be on the iPhone, but on the iPad mail goes through spotlight and there is absolutely no other way to get rid of these mails. My friend was in New York and went to the
Apple shop, and they could not get rid off them. Some people don't seem to mind, but I think it could be a security risk when Banks or other organisations send you mail.
MYmail is is absolutely free, and you can have several email addresses, when you delete your mail it is gone for good. I can now enjoy using my IPad because I am in charge of what I want to keep or get rid of.
if the problem is annoying you as much as it annoyed me, then go ahead and give it a try. But you need to reset your IPad, but you can always save anything like music or pictures through your computer, then put them back after you reset your IPad. This is the only way possible because I have rung Apple but no Joy.