Greetings John Doe or Greetings and Salutations Mr. Doe.
Use the name of the person who wrote the letter, and write a formal letter. Use the salutation "Dear Mr. ____" or "Dear Mrs. _____" as a salutation.
Dear Mr. President is a salutation of a business letter. The salutation goes at the beginning, thus that's how you got Dear.
salutation
Dear, or hello
Salutation in a letter is the initial greeting to your reader and should be addressed accordingly. Depending on who the letter is being addressed to, a salutation can began with Dear, Dear Sir or Madam, To Whom It May Concern, or Hello.
"Mam" is not a word in English. The word you are thinking of is "Ma'am," which is short for "Madam." In the U.S. we use "Ma'am" primarily in speech. When you are talking to a lady, it is polite to use "Ma'am," especially in the South of the U.S. In writing a letter, "Madam" is formal and polite. If you are writing to a woman who is in an official position (e.g., a government official), you could start a letter with "Dear Madam." If you are writing to someone in a professional position and you are not sure if it is a man or a woman, you can say "Dear Sir or Madam." If you are addressing a group of people, the salutation is: Ladies: Gentlemen: Ladies and/or Gentlemen: (The word "Dear" is dropped.)
The classic non-sexist general salutation is "To Whom It May Concern:" It is also acceptable to use "Ladies and Gentlemen:" (my personal preference) or any other polite non-sexist phrase that is appropriate to your audience -- "To The Recipient Of This Letter:" or "Dear Recipient:" If you have any information about the nature of your recipient(s), you can use it to narrow the generality of your salutation -- "Dear Admissions Counselor:" or "To The Customer Service Staff:" or "Dear Service Representative:" or "Dear Animal Welfare Supporter:"
You would normally capitalize nouns in the salutation, Dear Residents: (but this is not a significant aspect of the letter and is often ignored). If you use a longer salutation, such as "My dear Neighbors," the word dear would not be capitalized.
Dear Counselors:
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:".
Dear fool, prescribing a specific and normative correct or incorrect form of salutation to a letter is ridiculous. if your looking for the most proper or formal salutation your best bets are 'dear' (which is a bit personal and familiar and kinda sappy) or just simply (for maximum formality) 'Mr __________, ' and proceed with your letter.
Dear Mrs Ambassador..