I read from other web. this article about the basic Email Tips.

--Make full use of your email program such as Filter, then you don't need to review every email to judge if it's gabbage or not.

--Don't check email from time to time. Use the feather of the email program, OUTLOOK, for example, to annouce the arrival of a new email, like " sounding". 

--Don't read and answer emails all day long. Set aside a particular time to read and answer the emails and stick to this schedule as much as possible. 

--Don't anwer your email at the most productive time of your day. Because answering email is not a task that needs a great deal of productivity. This will help you make the best use of your working day..

And that's the tips..

quite useful!