The structure for a simple thank-you note should cover the "who," "what" and "when," and begin with the words, "Thank you." It can also contain some information about the gift or service that the provider is being thanked for and a line about seeing the gift-giver again.
After a warm greeting, the note should begin with a sentence thanking the person. This sentence can also include the "what," that is, what the gift or service was; and the "when," the date that it was given. It may also include the occasion. A sample opening sentence could be, "Thank you for the $100 check you gave me last week for my graduation."
The next sentence should state something about the gift: "I plan to use the money to help pay for books," or "It was thoughtful that you remembered I love purple." Some people include a photo in the note of them wearing or holding their gift.
Continue the note with a line about seeing the gift-giver again, such as "I can't wait to see you at the wedding next month," or "I look forward to seeing you during Christmas break." Then conclude with restating sincere thanks. An example would be "Thanks again for a gift that will help me continue my education."