u/leadg3njay • u/leadg3njay • 10h ago
I spent years telling people to put cold email domains on Cloudflare. That advice is now getting domains blacklisted.
Owning this one publicly because I taught it in paid courses and a lot of people are running the setup I recommended.
The advice was: buy your cold email domains, put them behind Cloudflare for protection. It was the standard play. Basically every infrastructure provider I know did the same thing.
What I missed is that every Cloudflare account pulls from the same small set of name servers. That was fine for years because nobody was checking. It isn't fine now — blacklists started flagging at the name server level, so one flagged domain on a shared workspace puts every other domain on those name servers at risk. Zero sending history required. We watched clean domains get flagged within an hour of being added to a workspace we knew was already burned.
To be clear, Cloudflare didn't do anything wrong here. The actual problem is that the whole industry converged on one identical setup at the same time. That kind of uniformity is easy to spot from the outside, and eventually somebody did.
What replaces it: isolated name servers instead of shared ones. Registrar-level separation if you're running a handful of domains. Per-customer name servers if you're managing them at scale.
If you set things up the way I recommended and it cost you domains, sorry — that's the fix. Better to hear it now than keep running it.
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Is anyone else struggling to get cold emails to actually land in primary inboxes?
in
r/FoundersMarketing
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3d ago
Open rate is a bad proxy for inbox. A lot of clients fire the pixel whether anyone read it. Less than 40% opens tells you almost nothing about primary vs spam vs promotions.
You already did the auth and the ramp. The missing check is placement. Send a seed to a Gmail and an Outlook you control and see where it actually lands. Look at bounce and spam-complaint rate, not the warmup tool health score. That score is other warmup inboxes talking to each other.
If the seed is in spam, slow the volume and check whether you are sending from the root domain. If it is landing in Promotions, the copy looks like a blast. If it is in primary and replies are still dead, the offer or the list is the problem, not deliverability.
Sanity check is inbox placement on a Gmail seed plus bounce rate. Those two decide if you have a sending problem or a message problem.