rezaurc on "[Plugin: Subscribe2] digest as category selected"

Hello Matt,
Thank you so much for this Great plugin, I have used it in many development. Now have a new project with new criteria, like to know if it is possible anyway to send digest mail, as per custom post type category selected by subscriber,
FYI, I'm using ur hook to integrate custom post type.
I highly appreciate, if u can help me anyway.
thanks again for great work.

http://wordpress.org/extend/plugins/subscribe2/