> All the way back to RFC 822, and still included in RFC 5322, are optional > Informational Fields. This includes a "Keywords:" field, which is > described in RFC 5322 as: > > The "Keywords:" field contains > a comma-separated list of important words and phrases that might be > useful for the recipient. > > + $header .= 'Keywords: Dokuwiki @ > '.parse_url(DOKU_URL,PHP_URL_HOST).MAILHEADER_EOL; The question is how this could be used by end users and if this information would be enough. Since this accepts a comma separated list, should we add additional info? Here are a few things I could imagine: * type of change (create, edit, minor edit) * the whole namespace hierarchy as one keyword * each namespace as a separate keyword Would this make sense? Robin, how are you using this header? What does it provide that the mail subject and sender address does not? Andi -- splitbrain.org -- DokuWiki mailing list - more info at http://www.dokuwiki.org/mailinglist