Can anyone recommend software for building a media list?

Hi

I'm looking for software that will help me build an email-only media list that I can export easily into Pure 360, or other similar email send-out program/service.

I've used Waymaker in the past, and had good results but it doesn' t seem to let me integrate with the send-out service I want, and i'm not interested in their send-out offering.

Is there something that can help me tailor press lists for an individual release like Waymaker does, as a stand-alone service?