The devil is in the details. And we are fully aware of the need to adequately proof all elements in a piece of communications. We work from two premises: 1) Readers cannot proof their own writing. 2) Proofreaders cannot dictate advertising language.
So our proofreading staff makes sure the communication remains respectful of the reader while being faithful to the strategic objectives: getting a response.
The same applies to other design elements of the advertisement.