I just got email from the provider of a mailing list. It was several pages of information and advice on possible reasons why I might be unable to receive mail from said list host, and what I could do about them if they proved to be the case.
So, let's see here.
Case one: I'm receiving mail from the list host just fine. In this case, none of the information in the message is useful or relevant to me.
Case two: I'm unable to receive mail from the list host for any of a variety of reasons. In which case I didn't get the message, and am therefore unable to make use of the information in it.
So tell me again why they bothered sending me this mail? It's like trying to send mail to IT to tell them the mail system is down, or trying to turn the light on so that you can see to reset the main circuit breaker. If it works, you didn't need to do it; on the other hand, if you need to do it, it ain't gonna work.