一、常见缩写
CC = carbon copy：抄送
FYI = for your information：供你参考
EOD = end of the day
BTW = By the way：顺便提一下
COB = close of the business
这两个词都是指下班前。需要催促某人在下班前给到回复的时候可以用用它们。
eg: Please let me know your thoughts COB today. 请在今天下班前让我知道你的决定。
IAM = in a meeting：在开会
WFH = work from home：在家办公
KPI = Key performance indicator ：关键绩效指标
OOO = out of office：不在办公室，休假
二、基本邮件礼仪
1. 感谢开头感谢别人回复自己邮件
Thanks for the quick reply/updated information. / Thanks for getting back to me.
2. 道歉邮件回的晚了，或者临时通知别人事情，要先道歉
Sorry for the late reply. / Apologies for the late notice.
3. 附件附件英语是attachment。但是如果你说please find the attachment会显得很没有水平。一般直接用动词attached或enclosed:
Attached/Enclosed please find the report.I attached the report and please take a look.
4. 收尾最后收尾一般都是询问别人意下如何。不要用please tell me…这种不地道的中式英语。可以这么说：
Please let me know your thoughts. / Looking forward to your insight.