On the iPad, how do I get rid of multiple icons at the bottom of the screen when switching to an app?
Those are other Mail windows you’ve somehow opened. Flick up on the non-dimmed ones (i.e. everything but the rightmost current window) to get rid of them. If you want to keep those windows around, unfortunately, you can’t prevent them from briefly appearing when you activate Mail.
I’ve updated the title of the thread to make it more meaningful to people who might be browsing or searching the forums.
Thanks—that makes sense.