Yep, entirely different but in the IBM world Notes was offered as the "upgrade path" from ccMail.
The interesting thing about Notes was that if you had a Notes "evangalist" in the company you would find pockets of little Notes based apps all over the place doing clever (and sometimes not so clever) little things under the radar. Long time back in a company I worked for that led to a lot of difficulties when Notes was to be phased out because there was no easy replacement for what those apps did.
Biting the hand that feeds IT
