At the end you should sign off with "sincerely yours" or any other related salutation. If you are writing a letter of intent for graduate school then it would have a different content. First of all letter of intent would start with your name, address, contact number and email address. After you have mentioned the date, you should then add a salutation like "Dear Sir/Mam".
LOI as a Source or Promoter of Undue Litigation _ Aside from the legal problem of the ambiguity and uncertainty inherent in LOI, there is yet another major problem inherent in the document, from a legal standpoint. Namely, precisely because the LOI is basically ambiguous and non_definitive by nature, the document often easily lends itself to different interpretations and understandings at the hands of different parties (or even the courts), and thus lends itself, in turn, to being a fertile source for undue litigation and legal contests for those involved with the use of that document in their transactions.