beehiiv Hex
Our own email infrastructure, built for the world’s best newsletters.
Engineered for inbox delivery and speed.
Want in on a little secret? For the past two years, we've been quietly building our own email infrastructure.
We own the IP blocks. The servers. The reputation. Everything in between. And have a team of deliverability experts who live and breathe this work.
So what does that mean for you? Your sends go out faster and more reliably. And when an inbox provider changes the rules, the team that runs your publication is already on it, with no vendor in the middle.
Here’s a look under the hood.
beehiiv Hex in production
137,000,000+
emails go out through beehiiv Hex on a typical day.
[ Accepted ]
99.1%
by inbox providers
[ Open rate ]
43.3%
average on beehiiv Hex
[ Queue time ]
1.8s
median wait to send
S-Tier Deliverability
The S stands for superior. But every newsletter platform says its email gets delivered. We’d rather show you.
Here’s a week of sends through beehiiv Hex, broken out by Gmail, Yahoo, Outlook and Apple: what each one accepted, and what it turned away. Your email platform is only as good as what it gets through. And we work to make ours better every week.
#1of 7 platforms for landing in Gmail’s Primary tab
Share of tracked emails that reached Primary in EmailTooltester’s Email Detective data.
Send with the top 1%
On most platforms, your newsletter goes out from the same IP addresses as everyone else’s.
And “everyone else” often includes less-than-optimal senders. Your sends could be sharing an IP with someone pushing payday loans and miracle cures.
Inbox providers judge an IP by everyone sending from it. One bad neighbor drags the whole block down.
beehiiv Hex groups senders by reputation, and our team screens out purchased lists and complaint spikes before they do damage. So you’re sending alongside the best on the internet.
Rented shared pool
beehiiv Hex pool
Speed. Speed. Speed.
News breaks. You hit send. Your readers have it in seconds, not minutes, with beehiiv Hex sending up to 3.7M emails a minute. That’s 68% more than our previous setup.
And it’s the same story every morning. No lag and no stragglers, so nobody on your list gets today’s issue an hour late.
The one-off emails are quick too. Welcome emails and automations go out in under 2 seconds on median, about 3× faster than before.
Sent in one minute
We know the postmasters by name
Inbox providers like Gmail, Yahoo and Outlook don’t publish their rules, and they change them without warning. So we read the signals.
beehiiv Hex tracks how every inbox responds to every send: what’s accepted, what’s slowed down, what’s pushed back. The moment those signals shift, we see it.
But seeing it is only half the job. Knowing what to do is the rest. Our deliverability team is trusted across the email industry. They sit on the boards of its leading organizations and sponsor its biggest events, so when the rules change, they’ve likely seen it coming.
beehiiv Hex is built by email experts, so you don't have to be one.
Gmail
The biggest inbox on most lists. beehiiv Hex sends at the pace Gmail accepts and adjusts the moment it pushes back.
beehiiv Hex
Our engineers and deliverability team, at the centre of the network. Your publication rides on every one of these relationships without having to join any of them.
Outlook
Outlook and Hotmail set their own limits. beehiiv Hex paces every send to them separately and backs off when they push back.
Other postmasters
Close monitoring of postmasters across the industry, so when an inbox provider starts deferring an address, we catch it early and adjust.
Spam reports
When a reader marks an issue as spam at a major inbox provider, that report comes straight back to beehiiv Hex and they’re removed from your list, so they never get another issue.
Blocklists
We monitor the major blocklists, so if anything is ever flagged, we catch it fast.
Other senders
Our team compares notes with deliverability teams at other big senders whenever an inbox provider changes its rules.
Built for newsletters
Password resets go to one person at a time. A newsletter goes to your whole list at once, packed with stories, images, links and a sponsor or two. That’s a different kind of email, and beehiiv Hex was built for it.
Every link in your issue gets a short tracking link instead of a long redirect string. Across dozens of links, that makes every issue lighter: quicker to open on a phone, and far less likely to get clipped by Gmail’s 102KB size limit.
Fine-tuned for every inbox
Every inbox provider sets its own speed limit, and none of them post the signs. beehiiv Hex runs on custom logic our engineers built for each one: how many connections to open, how hard to push, which responses mean “ease off,” and how to recover fast.
The moment a provider pushes back, beehiiv Hex slows that one sending address, spreads the load across the rest, and keeps your send moving. It makes these calls continuously, on every send, without anyone lifting a finger.
Delivery log
Connection manager
Built to keep sending
Things break. Maybe it’s your biggest send of the year, maybe it’s just a rough day at an inbox provider. Either way, your email still goes out.
beehiiv Hex has backup routes built in, with a 24/7 team monitoring delivery, routes, and queues. Your message gets sent, no matter what.
Your email deserves an owner
Here’s what most platforms won’t put on a landing page. When you hit send, they hand your newsletter to someone else.
Substack and Ghost send through Mailgun. Iterable and Braze default to Amazon SES. Renting is the easy path. Running your own means owning the IP addresses and earning trust with every inbox, one send at a time. It means keeping up a system that can never go down, with a team of seasoned deliverability experts behind it.
beehiiv owns every piece. So nothing between you and the inbox is ever someone else's problem.
Common questions
What is beehiiv Hex?
beehiiv Hex is beehiiv’s own email infrastructure. We own the IP addresses, the servers and the sending reputation behind your newsletter, and our deliverability team runs it end to end. Every new beehiiv publication sends on beehiiv Hex.
How do I get on beehiiv Hex?
There’s no action needed from you. We’re moving existing publications over in stages behind the scenes.
Do I need to do anything?
No, beehiiv Hex runs behind the scenes. Just keep your sending healthy and follow best deliverability practices.
Will my subscribers notice?
Nope. Your emails look the same and come from the same sender, and most readers aren't tracking how an email reached them. You might notice, though: faster sends, and shorter tracking links so fewer long issues get clipped.
Does beehiiv Hex support open and click tracking?
Yes. Every email sent through beehiiv Hex supports open and click tracking, so you can see how each send performs, all in beehiiv.
Will my deliverability or open rates improve?
beehiiv Hex is built to give every send the best shot at the inbox, and our deliverability team is focused on helping you get there. Deliverability and open rates also come down to your list, content, and readers, so we give you the tools to keep improving them, like our open rate diagnostic guide.
When email runs your business, it's our business.
You can rent a mail server. You can't rent trust. One team runs your publication and the engine that delivers it, with no vendor in the middle.