I’m not sure how I missed this one…
Last month while Return Path was announcing the addition of the Comcast feedback loop to their hosted solutions they slipped in a small announcement for the addition for Mailtrust’s addition to their hosted FBL solutions as well (4th paragraph from the bottom).
Bringing the total for Return Path hosted FBLs to three; Comcast, USA.net, and Mailtrust.
And, more on the way.