It is amazing to find that in this day and age, some companies have still not realized how important their email communications are. Many companies send email replies late or not at all, or send replies that do not actually answer the questions you asked.
There are many etiquette guides and many different etiquette rules. Some rules will differ according to the nature of your business and the corporate culture. Below we list what we consider as the 32 most important email etiquette rules that apply to nearly all companies.