| http://www.w3.org/ns/prov#value | - If it detects a syncmark or a pivot address of (any address resulting in message delivery to) the e-mail mailbox in any header field of the message other than the From field, indicating that the message is a new message copy-forwarded by the e-mail system, it stores the message in the synchronized mailbox but does not copy-forward it back to the e-mail mailbox.
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