When you see that "sent from my" signature, the sender may or may not really be on a mobile device. They might just be trying to get you to cut them some slack for short answers, typos or other email shortcomings. Huffington Post's executive tech editor Bianca Bosker admits she uses this tactic and cites a study published by the Journal of Applied Communication Research last year indicating people really are more tolerant of mistakes when they see that "sent from my iPhone" phrase at the end of a message.
Others, however, may think that signature and accompanying lack of detail in the message inconsiderate.
What do you think?
Why I Include "Sent from My iPhone" -- Even When It's Not [Huffington Post]