Email Expired Members
Go to Mailing Admin, create a new email, click the drop-down, and select Send to Surfers Matching These Rules. In the drop-downs below, select Expired Members. Fill-in and send your email.
Discount Join Options
Go to Programs Admin and create a new program. Go to Sites Admin, edit a site, and create a new join option using your new program. Go to the Default Payouts section and make this join option only available to the special program. Record the linkcode for that program and site.
Go to Mailing Admin, and use the instructions above to send your email, including your linkcode, to expired members.