Hey, Marc. I accept your invitation. :) For whatever help it might be to others I'll give you the full story. And hopefully it will help Cox understand better the needs (and the frustrations) of their customers.
But my advice remains the same. If your circumstances are like mine (after reading this, you'll know), elevate to Tier II, and even ask them to elevate to Tier III (where I believe the actual solution lies).
First, allow me to introduce myself. I am the Baby. You know, the one that has been thrown out with the anti-spam Bath Water.
I live in a small community. We have a Community Center. I love to dance. I love to share my love of dance through teaching people how to dance. I start a 'Social Dance Club' in the community to teach dance at the local Community Center (for *free* -- this is not a commercial enterprise -- I do this as a *volunteer* as a service to the community). I ask people if they would like to be on the Club email list so I can send them reminders about upcoming lessons, dance events, links to instructional dance videos, and so on. They say 'yes', AND PROVIDE ME THEIR EMAIL ADDRESS. That's important. In the Great Anti-Spam War, that is what is known as an "opt-in". Nobody, and I mean nobody, gets on my list without asking to be there. (And, of course, I know every spammer on the planet will say the same thing. I get it. Except in my case it is ACTUALLY TRUE.)
OK, a dilemma. I do not want to share people's email addresses with other members. People have a right to as much privacy as they can get nowadays. So I determine to use 'bcc' (blind carbon copy) for the newsletters. Send to myself, 'bcc' to everybody else. Except I know that in the Great Anti-Spam War many email transporters (Yahoo, Cox, AOL, you name it) will flag as spam an email with a bunch of 'bcc' recipients. I determine the magic number (at the time) to be 25. I chop up my Outlook distribution lists for the Dance Club into under 25 person groups (the overall list grows and fluctuates around 250 members -- hence, 10 distribution groups). Works for years. Literally. Until this last year. Cox changes THEIR rules (unannounced) to "under 20". How do I find this out? I send a newsletter and the bounces plug up my Inbox, all with "--SPAM--" subject appendages. I also learn that hyperlinks, according the Cox anti-spam robots, look "spammy".
OK, OK, so I reconstitute my groups into groups of 19 or less, and I quit sending hyperlinks (even to the Club's OWN SITE, for cryin' out loud). This works for like, 3 months. Right up until last weekend, when suddenly I can't send any more email. Neither can my wife (from a different computer). Hmmmmm, . . . this smells like our IP address is getting blocked.
Enter, Cox Tier II. The CSR says, "let me check your IP address". (Nobody at Tier I offered to do this.) "Oh, it looks like you are on a list. Let me check on that." Tick, tick, tick . . . "It looks like your IP address is being blocked. It is an automated block, and will last 48 hours. It is due to your spam 'reputation' score."
"OK, thank you. I appreciate your honesty."
I wait the 48 hours. Outbound is working again.
Except the Social Dance Club newsletter is dead. It has been killed. By Cox. Because robots (algorithms) can't reason. They don't see gray, only black and white. Since the Bath Water is all warm and soapy and what not, why is that Baby whining so?
And please, no posts back about MailChimp and Constant Contact and Joe's mass mailing service. I mentioned I do this as a volunteer, right? I'm not interested. I just want to run my goofy, dopey Dance Club, which will now be newsletterless. Thank you very little, Cox. I wish your robots were smarter.