Thank you for reaching out! If they are sending more than a certain number of emails to @shaw.ca email customers, their email address/domain may be picked up as spam. Their email subscribers can whitelist their email/domain with the steps here and adjust their spam settings here. Let me know if you have any other questions.
Tony | Community Mod.
It's not being reported as spam; they simply aren't being delivered.
The domain isn't on any blacklists, so I'm puzzled why they are having issues. the domain is. Can you tell me if it's on some internal list? Or what the issue could be?