Yours sincerely is a valediction which are used to express you saying farewell. Much the same as it is polite to say hello and goodbye to someone when seeing or leaving them it is considered a proper and formal way to end a letter.
Technically, "epistle" means a letter. The ending of a letter is usually called a "closure," which is simply a polite and accepted form of ending a letter. For example: "Sincerely yours, XYZ"
to end a perfect letter you could write sincerely, sincerely yours, very sincerely, or very sincerely yours
You could write either, Yours Sincerely (if you know them) or Yours Faithfully (if you don't know them).
At the end of the letter write yours sincerely.
To end a letter to an ambassador, write Yours Sincerely. Leave three to four spaces for the signature, and then write your name.
Sincerely yours
No, except at the beginning of a sentence because it is n ot a proper n ou n. Examples: Yours truly Sincerely yours
there are several ways of signing off ;eg : Yours sincerely, or yours truly , or respectfully yours: Mary smith( John Doe)
If you begin the letter with 'Dear Sir or Dear Madam', the letter should end 'Yours Faithfully'. If you start a letter with the persons name it should end 'Yours Sincerely'
Begin with a polite salutation - be sure to spell their name correctly and use the correct title. Then tell them what you are thankful for and why. Then close with a polite ending like "Thankfully," or "Sincerely," and sign your name.
In a somewhat formal letter, you should put "yours sincerely" (if you know the person you are adressing by name) or "yours faithfully" (if you don't). If you know the person you are writing well, you can end with "best regards".
A letter of complaint is a formal letter and should be written in the "business letter style". Address it to the head of whichever department is applicable. The letter always starts with "Dear Sir/Madam" and ends with "Yours Sincerely" or "Yours Faithfully" and your name and signature.