Warsaw Apache Spark mini-hackaton outcome. Event was held on 2015.01.15.
This is a very simple sample how to create your own streams to spark.
Example is tightly integrated with gmail so for testing checkout conf/imap.properties file where you can pass your own credentials.
Additionally you might want to change the imap folder to stream from. Edit code in object ImapMain. For gmail passing inbox should be fine.
For best effect create an empty folder and copy emails to it and look at the output.