I have only just caught up on this thread and have not received an email. Looking at when it was likely sent out my logs from then will have expired so I cannot see if it was rejected for any reason by my MX host.
The good news, Jason, is you need do nothing to remain a member as you (like everyone else) opted in when you joined. The email was a courtesy and a confirmation that you have access to your data via your profile, and that you can write to me to have your account deleted.
Not sure what happened to the outgoing emails - a lot got through but it looks like a lot didn't, and as it's "no action required" we're not re-sending. A couple of folks have emailed to ask for their accounts to be removes, and others have confirmed receipt, so there's quite a lot in both camps.