The one has NOTHING at all to do with the other.? I have everything check in my settings to receive email notifications.
That checklist controls the internal setting here INSIDE of the forums.
All e-mail from the forums is then sent outside to SENDGRID which handles our user lists and allows members to OPT-OUT for any number of different reasons. If you OPT-OUT of any e-mail for any reason EVER, then you opt out of EVERY E-MAIL for ever.
Categories we track include...
Global Unsubscribe
Group Unsubscribe
Bounce
Spam Report
Blocks
Invalid address
You can put yourself into one of those AND your ISP can put your e-mail account into one of those.
But we are required to maintain those "Opt-Out" lists and NOT send anything to anyone that is listed.