If you spend the greater part of your day writing and reading emails, consider that you may in fact be a writer for a living!
This article on how to write better emails has some excellent tips on communicating most effectively – got some great structure and content suggestions (don’t use “yesterday” without saying what day that was… asynchronous comms means yesterday could have been a week ago by the time they read it!). And more.
I have written other posts on writing better: check out the writing tag