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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">The only way to actually remove a mail from an mbox file is by removing it from the actual file. As this can be a rather expensive operation, the mbox resource keeps a list of deleted messages. Once in a while these messages are really removed from the file.</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-weight:600;">Note:</span> The downside of this is that if the file is changed by another program, the list of deleted messages cannot be trust any longer and deleted messages might reappear.</p></body></html>