Honestly, I don't think I'd even see who it was from. I use CT mail mod and it opens all my mail at once. Great for my AH alt, but if I'm not paying attention, I'll just see all the money in my bag, but not know who it's from.

I think I can disable it, but it also just deletes empty mails, so the one you'd send about your mistake would get lost on the way from clicking open all to the bathroom