Send an anniversary letter when you are communicating information about someone’s anniversary. You will sometimes write a letter like this on behalf of someone else, such as your child, your elderly parent, or someone who has placed you in charge of his or her affairs. Sometimes, anniversary letters are professional in tone and style, especially if addressed to business colleagues, but they can also be more informal and conversational, depending on the situation and context. The style and wording you use in a letter depend on the specific circumstances.
It is generally best to keep letters as short and concise as possible while still communicating the necessary information. Feel free to customize and modify any of these letters according to your individual needs.
NOTE: In all letters, brackets indicate information that you should fill in. Remove the brackets when you have modified the text to your liking.