Also note that L-Soft has revealed their ODBC int.f plans:

ftp://ftp.lsoft.com/LISTSERV/beta-1.8d/manuals-beta/

ftp://ftp.lsoft.com/LISTSERV/beta-1.8d/manuals-beta/developer.rtf

Search for

ODBC

This int.f might prove of value instead of super-lists, esp. if you are
constantly rebuilding the subscriber list.

Or not.

/Pete