This is a simple daemon that runs from Unix like operating system that will clean out Groupon and other date dependent emails from your mailbox that are older than a day old.
To build and install the code on a Mac run:
brew install jsvc
brew install gradle
brew install maven
gradle install
You need to first configure it with your username and password than start the deamon
export JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/Current/
buil/dinstall/GMailGrouponCleaner/bin/configGMailCleaner
build/install/GMailGrouponCleaner/bin/GMailCleaner start