A comma is not required in the salutation of an editorial letter. You can use either a comma or a colon after the recipient's name. For example, "Dear Editor," or "Dear Editor:".
Comma
A comma is typically used after a salutation in a letter or email.
Note
It used to be considered correct to put a comma after the saltation as: Dear Sir, Nowadays the comma is often left out.
exclamation poi nt. It should be-- Hi!
comma
The opening of a letter is called a salutation. It typically includes a greeting, such as "Dear [Name]," followed by a comma.
Yes, it is correct to use a capital letter after the comma in "Dear Sir" as it is used as a salutation at the beginning of a letter or email.
It is almost always a comma, but rarely I have seen a colon. When you are writing a formal letter, it is a comma, but if you were to write a informal letter to a friend, it doesn't really matter. For all of the letters I write I use a comma, and so does everybody else I know.
a comma, unless you write "To whomt it may concern", then you should put a colon (:)
A comma should follow the closing if there is a colon following the salutation.
Colon