As you may know, I (via my company, InBox Solutions) would be interested in developing this module.
I had been in touch with Andy for some weeks now about the Mailing list module. I've also looked at the other php mailing list around and I beleive we could inspire ourselves from the features in those mailing list. However, I'm confident that we would have a better module in the end if we make it a native XOOPS module. To my experience, porting a script is usually not a good thing on the long run.
I beleive developing a new module from scratch would be better and less expensive.
The first thing that need to be done is to establish a list of features that would be needed in this module and grade them from "Mandatory" to "Would be nice". Then I could estimate the overall cost of such a project and then we could see if the community would be interested in investing in such a module.
One thing is for sure : a LOT of users would benefit from such a module ! How many of them will be interested to participate in this project !
Cheers !
.:: Open Source :: The SmartFactory ::.
.:: XOOPS Professional Services :: INBOX International ::.