Certainly, which is fantastic. However, it is rather official, for example with letters being forced to do with legal matters. A lot less formal and a lot more usual is "Dear Sir or Madam:" (note the use of the colon; "To whom it might worry:" also should use a person). https://tax-lawyer-karachi79484.actoblog.com/37373702/5-tips-about-child-custody-lawyer-karachi-you-can-use-today