Alternatives to Mailman [closed]
Solution 1:
I would try Sympa. AFAIK it is very good with delegated management options.
Maybe even better than mailman's (I am not using it right now, so you have to try it yourself).
Solution 2:
Gentoo uses mlmmj for their mailing lists.
There is also the ever ubiquitous Wikipedia link of Mailing List softwares, including things like Majordomo and phplist
From a brief skim, either mlmmj or phplist would likely meet your needs.
Solution 3:
Lyris ListManager is popular among lots of list server admins. If you have under 200 people per list you can get away with the free version.