It's considered bad netiquette to use capital letters in an email because it looks like YOU ARE SHOUTING.在电子邮件中使用大写字母被认为是不符合规范的，因为这样看起来像是在吼叫。Writing an e-mail message in all capital letters is considered a breach/violation of netiquette because it looks like you are shouting.电子邮件信息全部用大写被认为是违反网络礼节的行为，因为这看起来像是你在大喊大叫。