Talk:Derpy/@comment-4778146-20120130044246/@comment-4445678-20120130155426

I'm guessing the mail thing came from Feeling Pinkie Keen, where she was seen working in delivering packages. It's not exactly the same as delivering letters; I always imagined her occupation being more along the lines of driving those big brown trucks that deliver all the packages rather than those white vans that deliver the mail. But then I learned that they're both part of the same postal service, so...I guess it's possible.