Kleanmail is a cloud-based e-mail validation tool that helps you cleanse your customer database. It helps to identify the valid and invalid email IDs, thus ensuring that emails are sent only to the right contacts. Not only does this save you the additional costs spent on bounced emails, but more importantly, it saves your domain / IP from being blacklisted by most of the email service providers. This effectively increases the chances of your emails landing in your customers’ inboxes.