The one thing you do NOT want to do when you get a returned email is to change the email address to a fake one like bademail@xxx.com.  

Instead, check the Wrong email address flag on the member's account.  You can access this flag anywhere an email address can be entered, such as through the Name/Address button (F14) in Inquiry and Phone Operator, or via Tool #14 "Member Personal Banker" (shortcut: pb), or via Tool #15 "Update Membership Information" (shortcut: umbr).

When a member's email address is flagged as wrong, the system automatically omits them from subsequent emails, including e-Statement notifications, marketing emails, etc.

Use the related link below to learn more about how CU*BASE handles wrong email addresses when emails are sent via CU*BASE (such as those sent through Member Reach or as e-Alerts or e-Statement reminders).