Notifiction to Lotus note inbox on Work item related to Purchase order release

Hello,

I am working on logistic side (MM).Our business have a requirement to send the work item or notification mails regarding the Purchase order approval to their Lotus note mail box. I would like to whether i have enhance the workflow to send notification simultaneously to SAP & Lotus note inbox or can i achieve the same through configuration.

I already gone through SWNCONFIG & RSWUWFML2 reports. However it could not help me much. We are using ECC 6.0 .Please help me on the same.