Nooma List Cleaner by Nooma OS is a powerful email list cleaning and email address validation tool designed to help marketers keep their email lists clean and free of bounces, invalid addresses, spam traps and more. Nooma List Cleaner by Nooma OS is a powerful email address cleaning and email address validation tool. Using this tool you can remove bounce backs, spam traps, invalid email addresses and catch-all email addresses from your list. Doing this, you will see an increase in your email marketing campaign ROI and a major boost to your email sender reputation due to low bounce backs.