How to write a formal e-mail in english? (1)

I have practiced writing a formal e-mail but I am not sure if there is any mistake in grammar or the way I used words or not. Is there any word I used was wrong? Please kindly check it and let me know. Thank you very much ^^
Here the e-mail
To: [email protected]
From: [email protected]
Subject: Recommendation for WCH’s internal communications problems
Dear Sir or Madam,
I am writing with regard to your recommendations for our company’s recent problems. We have perused all your solutions and come up with the following opinions:
First, we all disagreed the method that Heads of Department should send weekly reports to the Board of Directors. This way will lead to bureaucracy and difficulty in dealing with the overloaded or repeating customer’s complaints.
On the other hand, we agreed to hire a new key accounts manager. An internal manager [Repeating will make the listener feel being lectured]It will be most helpful in to attending to customers individually and to manage and supervise all relevent details. data.

Good!