According to law firm Ciyou & Dixon, PC, five things should be in a custody letter: complete contact information for anyone providing a character reference, photographs, a timeline of events, recorded conversations (texts or emails) and explanatory letters.
These five elements are crucial to a custody case because you want to have as strong a case as possible with supporting evidence to support mediation, settlement or trial. An incomplete letter makes it harder to see the results you want. The more information a custody evaluator has, the better. This material provides a basis for the evaluator to make an informed and reasonable decision when custody is decided.