I am looking for any email newsletter software that is implemented in object oriented PHP and that uses MySQL database.
Required features: simple mail forwarding, subscribing, plain text mail and html mail. Basically we want use the basic features and extend based on our requirements. Hence we are looking for object oriented PHP based implementation. It should be preferably open source.
I had a look at various softwares available: phplist, pommo and tellematic. None of these are OO PHP based.
Please don't close this as duplicate as I am specifically asking for OO PHP implementation.