From a few minutes googling, the whole SNDS implementation does seem to be a complete disaster, and everybody’s head is buried in the sand.
Imagine you are at a conference in a work capacity. A prospect seems interested, and hands you a business card with an email that reads “hotmail.com”.
You then have a choice... do you warn the prospect that your email might not get delivered? If you do, chances are he’ll form a certain opinion of your organisation, and run a mile. If you don’t warn him, chances are he’ll get fed up waiting, and move on anyway.
Verging on conspiracy theory, but makes me wonder... Is it just possible there might be a door about to open, whereby hotmail delivery will work reliably again, providing a certain subscription is paid, notionally for something like ‘validation of mail sender’?