Their is nothing more embarrassing then sending out an important document, and than moments later realizing its littered with grammatical errors.
How can you avoid this happening to you? By simply proofreading of coarse.
Dedicating sometime to proofreading your material is a small price to pay when you consider the fact that a few errors could result in you loosing a potential client.
So before you send off you’re next email or business proposal, I strongly advice that you have a thorough read-through what you have written to ensure that its devoid of mistakes.