Notqmail is a fork of Qmail, which "begins where netqmail left off".

A good description of their goals can be found on the wiki:

* https://github.com/notqmail/notqmail/wiki

> [Notqmail] will provide stable, compatible, small releases that do not conflict with or break your local site customization or the other software you run in your mail system. notqmail also aims higher: we are developing a qmail-derived system that is extensible, easily packaged, and increasingly applicable to a wide variety of modern needs

An idea of upcoming changes can be found on the roadmap:

* https://github.com/notqmail/notqmail/wiki/Release-Roadmap

There's also an interesting discussion of Notqmail, with responses from many of the team, on Lobste.rs:

* https://lobste.rs/s/2r3stk/notqmail_collaborative_open_sourc...