Per our software vendor at Club Essentials:
If members are getting our email sent to their spam folder, they need to mark us as not spam, add us to the safe sender list, etc. They may need to do this a few times before the service picks up on it and finally stops considering it spam.
We are working to get certain services ie: Embarq, Cox, etc. to add permissions that will prevent them from marking our outgoing email as spam.