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John wants to send an email to everyone in his family, but he is having computer troubles and due to his slow dial-up connection he can only send out one email. His family consists of him and his brother, and their parents, his aunt and uncle on his Dad's side, their two sons, his aunt and uncle on his mom's side and their two daughters. He knows that his mom will only forwards emails to her husband and her kids. He knows his dad will only send emails to his brother, John's uncle, and he never forwards them to anyone. His aunt on his dad's side will forward emails to her kids and her husband and their youngest boy will always send them to his mom. The oldest cousin on his Dad's side will always forward them to his younger brother and John's brother and likewise John's Brother will send them to him. John's Aunt on his mom's side always sends them to her sister (John's mom) and her husband. John's two cousins on his mom's side and their father always share every email they get with each other. Who should John send his one email to so that everyone in his family will see it?

john needs to send this email to aunt on moms side
she shares this mail to her husband and johns mom. Her husband share it with his daughters.
Johns mom sends this mail to his father, john and his brother, brother shares this to his cousins on dads side.
They share it with aunt on dads side.
And johns dad share it with john's uncle on dads side...