It takes a day for the system to refresh your settings - you were already in queue by the mailer program.
They do work. I am not trying to be difficult here, but there is a difference between something not working the way you expect it to, and something “not working” at all.
And that is one reason why the mailing list didn’t work and saw declining engagement. You had to wait 24-48 hours not because people weren’t responding quickly, but rather because @Hanuman had to manually clean up and release each email to the entire list. So there was the time between when you posted and when someone(s) responded, and the time between then and when @hanuman released the emails. That was the cause of the delay. As you can see (if you login or stay logged in), people are replying very quickly. Some quicker than others of course.
This thread, for example, is 24 hours old and has 17 replies. All coming in real time and being posted in real time.
Facebook has you log in for the same reason we do - they can’t give you the best experience if you don’t log in. Considering you can click two buttons and remain logged in almost in perpetuity, that seems like a small price to pay to get a richer media experience. But that is not my decision to make. I’m just trying to build something great, you have to decide if you want to use it or not.