introduce SMTP collector
introduce SMTP collector

synthesist/panoptimon,bdha/panoptimon,ewilhelm/panoptimon,bdha/panoptimon,ewilhelm/panoptimon,ewilhelm/panoptimon,synthesist/panoptimon,bdha/panoptimon,synthesist/panoptimon,bdha/panoptimon,synthesist/panoptimon,ewilhelm/panoptimon