57:50 The items below list several e-mail practices. If the practice describes something workers should do when using e-mail for business purposes, select Do. If the practice describes something workers should not do when using e-mail for business purposes, select Don't.

include a signature.

include lots of exclamation marks to get your point across.

include the thread of previous messages.

make e-mail messages brief.

mark messages as urgent so your e-mails will be read first.

use a relevant subject line.

use all capital letters when the message is urgent.