[rixthefox]

> most people realize that their Outlook/Hotmail email service is defective

This is exactly what I've begun telling people and warning friends and family members about. I run my own email... well I run my own ISP at this point and we have our own dedicated block of IPv6 addresses but still rely on IPv4 addresses from our cloud providers and I've started to grow frustrated by the lack of movement by the incumbent email providers that I've started just straight up telling people don't expect any email delivery from me if you're using any provider that still lacks proper IPv6 on their SMTP servers.

It's no longer my problem and I will happily tell people that their email provider is defective and that they need to find a new host. If that is too much for them, to bad so sad not my problem. I did everything I could do. At some point you have to stop trying to work around "Big Cloud" and their nonsense.