This mailer for a Nutcracker themed charity event was mailed to someone who last saw the show 6 years ago. It was mailed to an address she has not used in 4 years.
The creative was extravagant and well designed, but it was sent to someone who is not interested and to an out of date address.
Learnings: Refresh the list. Verify the address, or consider mailing only to people who had recent activity with your organization.