Final update, it worked on the production server!! so now our forum is working properly sending emails the Linux way on a Windows Server OS, quite nice I would say, just as a side note our forum is actually really small in number of users, as it is an internal forum, so I can't assure this setup will work out to other forum's expectations or needs, also I would like to add that this shouldn't be the way to do it on Windows as it is kind of a weird way to handle it so in later versions it would be nice to see it reworked or polished for Windows environments (especially because it looks like the program used to simulate sendmail on Windows is no longer receiving maintenance).
@julian Thanks for getting back to me quickly. Other priorities pulled me away from this, but after looking at your response, it seems like what I'm actually after are "unread" counts, not just notifications. The simple GET solution returned notifications, but not every "unread". Our app is using the session sharing plugin, and we are associating NodeBB accounts with our app accounts. Would I be able to leverage some of the session sharing functionality to get an unread count for users on our app based on their NodeBB account? Thanks