metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer type="person">
    <email>gentoo_bugs_peep@parallaxshift.com</email>
    <name>Philippe Chaintreuil</name>
  </maintainer>

  <maintainer type="person">
    <email>bug@mejor.pl</email>
    <name>Marcin Mirosław</name>
  </maintainer>

  <maintainer type="person">
    <email>mjo@gentoo.org</email>
    <name>Michael Orlitzky</name>
  </maintainer>

  <maintainer type="project">
    <email>proxy-maint@gentoo.org</email>
    <name>Proxy Maintainers</name>
  </maintainer>

  <use>
    <flag name="bayes">
      Require a database (MySQL, SQLite, Postgres, or BerkDB) backend
      to enable the Bayesian filtering database.
    </flag>
    <flag name="cron">
      Install a cron job to update SpamAssassin's rules daily.
    </flag>
    <flag name="qmail">Build qmail functionality and docs</flag>
  </use>
</pkgmetadata>