What's the Point?
Before you start writing any sentence you need to ask yourself what point you are trying to get across to the reader. Are you trying to elicit an action? Are you making an emotional appeal or promoting a product’s features?

You must have a clear objective with every statement you type, otherwise your message becomes cluttered. You probably know your objective for the overall email, but that may be too general. You need to drill down to the details and make sure every sentence is included for a reason.

If you read a sentence and it feels like it’s just a ‘filler’, then get rid of it. You don’t need to fill up space to get your point across!

After the reader opens your message, he or she will be looking for your "point". So you're really doing your reader a favor when you make that point crystal clear.