Very Rightly said Surendra Sir.
My personal experience says that, communication is important in every aspect to avoid confusions and misunderstandings in offficial communications too.
In today times, most of the times we communicate with mails and letters, communication skills enables us to interpret the exact meaning which we want the other perosn to read and understand.
Link for somewhat related forum > /forum/e-mail-etiquates-100560.asp
Thanks for your valuable views Sir.