Mail In A Box is a great software but sadly it only works on Ubuntu 22.04 LTS and not Windows. I do hope the Mail In A Box development team will produce a Windows version in near future.
I have virtual machine running Windows 2019 Server and I run MailEnable on that virtual machine. Its freeware but not open source mail server on my wireless broadband link. Its extremely easy to setup.
I am willing to support an effort to crowdfund development costs for Mail In A Box Windows version if the original development team does not have money.
Anyone here want a Windows version?