Hello Charles, and thanks for your question.
Unless you have a 'title' like 'Dr.' (M.D. or Ph.D) or Esquire (lawyer), you don't need to write any identifying information before or after your name in formal communications. Your signature should suffice.
People don't ordinarily put the title of their educational degree after their name, unless it may be relevant to the type of formal communication. For example, if a teacher with a Masters Degree was asked to evaluate a textbook for future use in a school in a specific subject, like, for example, English, he could sign his name to the report, followed by "M.A. Education/English". Even in that case, it most likely would not be necessary, if his credentials were already known to the people reading the report.
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