1. Click Admin.
2. Click Send Management.
3. Click URL Expiration.
4. Enter the number of days after emails are sent to expire links. Some links may take up to 30 days past the set threshold to expire for emails sent before the March 2017 release.
5. To redirect subscribers to a custom URL, choose Custom Defined URL and enter a valid URL that includes http:// or https://.
6. Click Save.