Actually, AR is very close to a true drip marketing system but falls short (as we understand it) as follows:
A drip marketing system is built around a set of predetermined, fully-automated rules/conditions. The key is the predetermined "fire and forget" process - upon an Recipient action (an Open, a Click whether general or specific, etc.) triggers the automatic sending of template 1, 2, 3, etc. at a pre-specified interval. Further engagement with that triggerred send would then potentially trigger another follow-up send... and so forth. As it is now, I believe, MW will send a new, qualifying Engaged address to a dedicated list but one would then have to manually set an AR Campaign for each subsequent follow-up. So, it seems that AR is set up to meet the first condition (this action copies you into this list) but unless I am mistaken, ARs have to then be set up one at a time for each subsequent "on-boarding" follow-up.
So again, unless I am mistaken you are darn close to major marketing feature that a lot of us could use.
BTW Twisted, this comment is from the original "Papapooch". I'm the guy who originally bought your fine product. My lead guy on all this is John, acquired my nom de plume (the nickname my grandchildren call me by) for the purposes of this Forum.
We have benefited greatly from MW and your rock-solid support. So, these comments are offered in that spirit.
Thanks.