Github user Leemoonsoo commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/918#issuecomment-222587470
@vgmartinez I think move email facilities from `Notebook.java` to new
class, like @bzz mentioned, would be the first step to generalize it. Doesn't
need to generalize everything from the beginning, but i think it worth to show
possibilities of implementing more events and more actions. And taking code out
from `Notebook.java` will help.
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