A policy can be established that is associated with an email distribution list. The policy can specify an extent that email addresses contained in the email distribution list are visible to recipients. An email message to be conveyed to at least the email distribution list can be identified. A set of recipient messages can be created from the identified email message—one recipient message for each of the recipients. The policy can be applied to each recipient message to determine an extent that email addresses contained in the email distribution list are visible to that recipient. Different ones of the recipient email messages can have different visibility regarding email addresses of members of the distribution list based upon the applied policy.