Letters should contain certain pieces of information in the correct
1 the full address of the sender including the postcode in the
2 the date the letter was written.
3 the receiver's name.
4 the information. (The letter itself that is.)
5 the correct ending.
6 the sender's name.
Beginnings and endings of letters vary according to whom you
are sending the letter.
To someone you do not know:
Dear Sir or Madam,
Yours truly or Yours faithfully + your signature.
Dear Mr. and Mrs. Cockcroft,
Yours truly or Yours sincerely + your signature.
Dear Paul and Julie,
Yours affectionately or Yours ever + your first name.
Love from + your first name.