Why set up the IP in the White List?
A White List is a list of trusted IP addresses, which allows the sending of e-mails through your domain without being marked as Spam.
Spam filters, which are based on many e-mail providers, tend to block some communication, classifying them as “junk” and diverting it to the Spam box. However, these are sometimes mistakenly blocked messages that you were meant to receive in the inbox.
Inserting White Listed IP addresses for sending, allow your mail service to trust the newsletters sent using Kloudymail. The Spam filter, will then, tends to deliver them in the inbox.