We highly recommend adding the specific domains that a notification may target to your Landing Domain Whitelist. This will help ensure that links in your notifications can only target pages on approved domains.
You can view the whitelist from your domain settings page.
Edit button to modify the domains that are whitelisted. When a notification is created we will check all landing URLs against the whitelist and refuse to send the notification if the domain is not whitelisted.
After adding the desired domains save the form for changes to take effect immediately.