Which of the following guidelines about use of all capital letters in the email messages most important

The correct answer to this question would be to: Avoid the use of all capital letters because this is not grammatically correct. While using all capital letters may be good for getting someone's attention, e-mail is a formal communication method and proper grammatical rules should be followed which involve not using all capital letters for a word unless it is an acronym for something.

answer6-9 screws;