If you want to drive me bonkers send me an email that is only a subject.  It will make me crazy because most of these emails come in like an awkward text message, but instead of using the body of the message to tell me more information I get nothing.  Blankness is not boldness in this case.  Send me an email with a subject that means something (hopefully within the vein of content that your message body contains) and then a message body that contains full, complete, clear thoughts.  I even prefer paragraphs rather than a stream of consciousness email that is about 6 topics, but has no way for them to be found due to a lack of break in contents.

Yeah, if you send me emails with just subjects I’ll be bothered.  I won’t tell you, but I will tell the Internet.