Unsend Send in mail app in a bad spot

I have now accidentally not sent an email 4 times because while swiping up to close my mail app I’ve accidentally hit undo send at the botttom of the screen. I was wondering what was happening and finally figured it out, I’m trying to be more cognizant of it now but when you are moving quickly it’s easy to forget. Perhaps it would be possible to move the undo send button somewhere else within the app? Just a thought.