A good email just got deleted and can't be recovered

A good email got caught in the Gmail spam bucket and it was being deleted before I realized that I didn't want to lose it. Gmail does not allow recovering deleted mail, so it is gone. If you sent me an email about the Dutch in the Arctic, please send it again. Having a spam bucket is problematic, as good emails occasionally end up being classified as spam and I do not recognize them until it is too late.