Marketing/Communications Planners

A colleague is putting together a list of comms planner software:

What we need in a nutshell is a tool that allows creating marketing plans, then building specific campaigns under these plans, recording of customer segments who will receive the mailings. We will want to perform some cross over analysis between campaigns.

Does anybody out there have any experience of using such systems that they’d be willing to share here?

Thanks in advance,

Richard Portchmouth
Insight SIG Treasurer and BHF data guy