To search for non-member contacts, so that you can email or export them, add the Contact properties criteria on the Advanced contacts search screen, and choose None of selected from the dropdown. Now, check the following checkboxes: Member, Suspended member, and Archived.
This search excludes suspended members and archived members as well as active members, unless you uncheck those check boxes to include them.
After you perform this search, you can click the Email contacts button at the top to email these contacts, or click the Export button to export them.