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March 28, 2014 - By 


An email whitelist is a list of contacts that the user deems are verified to receive emails from and must not be sent to the trash folder. It is a special list of those, who are provided a special privilege, access or recognition. The ones on the list are recognized and accepted. Spam filters which come with email clients have both the lists- the whitelist and the blacklist of the senders and the keywords to search for in the emails.

If a spam filter maintains a whitelist, then the emails from those addresses or domains are always allowed. If a whitelist is exclusive then only the emails from those on the list will get through. In case it is not exclusive, then it prevents the emails from being deleted or sent to the spam folder. Email whitelists are used to reduce the chances of false-positives.