Comment by nurettin

It is useful. It tells me that the sender isn't tech savvy and/or likes to show that they prefer expensive apple products. It is like carrying a Prada or Ray-Ban.

It also tells me that they probably don't care about second hand embarrassment.

And it tells me that they checked my email while away from keyboard, which means they are hard working individuals who care about business, but not enough to rush to a computer to reply properly.

Lots of social ques on that one.