| http://www.w3.org/ns/prov#value | - Also, the system forces the recipient to review all spam to ensure that legitimate mail is not deleted that may have been received without a passcode. [0013] Therefore, it is desirable to provide a method for stopping unsolicited communications such as email, marketing email and other unwanted email (i.e., ???spam???) from vendors and other various senders that does not require the receiver's inpu
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