[kumarvvr]

Not trying to defend IBM here, but as a one time Lotus Notes dev, I can assure you that LN is not just an email program, but a whole platform that enables you to build workflow apps very very quickly. Not unlike sharepoint, but the catch being that it worked best from the LN client rather than the browser.

When I worked for IBM Global Business Service div as a dev, most of our payroll, billing, travel approvals and what not were done on LN. IIRC email was just another app on the platform.