I have used IBM notes in my past employment. The application was in use in majority of the departments in our organization where it was primarily used for email, calendar, events and meeting scheduler,contacts management , social networking within the institution (note 9) and also enterprise shared storage.
The basic functionalities like the calendar, email, contacts and scheduling is implemented superbly.
What I liked about IBM notes is, it has a very simple user interface which makes it easy to use.
The application's compatibility with various operating system platform e.g Windows, linux, osx mac etc.
IBM notes offers one of the best encryption and message security standards which is key when passing highly confidential information and data within an organization.
I also love the easy to backup and recover data functionality.
Despite IBM Notes being an effective an helpful application, it has got its challenges.
One major factor letting IBM notes is Its old schools GUI, Its less appealing to new users and the tech savvy guys.
There are few or no marketing initiatives by IBM to market this product, the should up their game on marketing.
IBM should do a revamp and re-engineer this application, they Seem to be letting it Die slowly.
Communication within a business is key in making decisions and passing crucial info to stake holders in a business. Without an effective communication and scheduling platform like IBM Note an Institution might suffer breakdown due to ineffective means of communication and planning. Our organization reaped immensely from timely and effective communication, on point meeting scheduling, contacts management all this owing to IBM notes.