to whom it may concern

Dear Sir or Madam versus To whom it may concern

english.stackexchange.com · questions · 2112Dear Sir or Madam versus To whom it may concern english.stackexchange.com · questions · 2112 When is it appropriate to use the terms Dear Sir or Madam and To whom it may concern?The rules I was taught state that Dear Sir or Madam should be used when youre writing a letter to a person about something that person has direct involvement in (e.g. returning a defective product to a customer service department).