Our inboxes are chaotic: about 17 billion e-mails, all kinds of spam, endless threads from 14 months back, junk from mom sent to 1,200 people, colleagues’ and friends’ contacts, ad infinitum.

So what’s your biggest e-mail peeve? According to a survey of 250 people in advertising and marketing:

¢ Being copied on the “reply all” function, 29 percent.

¢ Receiving large, unsolicited files, 29 percent.

¢ Messages that are too long, 16 percent.

¢ Typos and grammatical errors, 13 percent.

¢ Having to scroll through the message to find the information needed, 6 percent.

“As professionals increasingly rely on e-mail to communicate, it becomes more time-consuming and cumbersome to manage messages,” said Tracey Fuller, executive director of The Creative Group, a temp-staffing company based in Menlo Park, Calif. “When composing e-mail, it’s best to be brief and identify what action is needed at the beginning of the message.”