since this seems to be the main thread for this let me explain. I made the first thread about the issue.

If Comcast gets too many users clicking spam on emails, it will make it spam for everyone. If it exceeds a certain amount, they will IP BAN the ip the email is coming from. that means it does not go into a spam folder, it never arrives. SE gets a returned email saying undelivered email.
At that point, it is up to Square Enix to contact comcast and get it unblocked.

This is the website for that http://postmaster.comcast.net/block-...l-request.html