Nearly two years ago, we decided we didn’t want to rent our email infrastructure like the rest of the industry.

So we started building our own.

Introducing beehiiv Hex: our own email sending engine, built for the world’s best newsletters. It runs on our own MTA, from IPs we own and operate, and already sends 137M+ emails every day.

Here’s what it means for you:

⚡ Faster sends
📬 Better inbox placement
🧠 Experts behind every send
🪄 Zero setup

Let’s dive in 👇

Your newsletter is your business. We didn’t want the most important part of it, getting to the inbox, to depend on someone else.

Why we built our own sending engine

Most email platforms don’t actually send your email. When you hit send, they hand the heavy lifting to a third-party sender that’s also sending for thousands of other companies, including plenty of spammers.

That matters because inbox providers judge your email partly by who it’s sent alongside. Your newsletter gets lumped in with the rest of the internet, so someone else’s bad behavior can push you toward the spam folder.

We saw it firsthand: variable sends, and results that weren’t as good as they should be.

So we decided to own our email infrastructure end to end. It’s faster, more reliable, and shared only with the top 1% of senders: the best newsletters in the world.

With beehiiv Hex, we own the path to the inbox. The IP addresses, the servers, the sending reputation, and the team who runs it.

That means:

This is our way of giving you the best shot at high deliverability.

Faster sends

Say you run a financial markets newsletter, and something big happens at 6am. You want your take in readers’ inboxes before they’ve opened another app.

beehiiv Hex sends up to 3.7M emails a minute, 68% more than our previous setup. A send to 1M subscribers goes out in about 16 seconds.

Your first reader and your millionth get it at basically the same time.

The small emails matter too. When someone subscribes, their welcome email now goes out in 1.8 seconds at the median, about 3× faster than before. It’s there before they’ve closed the tab.

Better inbox placement

Speed doesn’t matter if the email never lands. So here’s how beehiiv Hex is doing:

99.1% of emails sent on beehiiv Hex are accepted by inbox providers. Not to mention, sends on beehiiv Hex average a 43.3% open rate.

You don’t have to take our word for it, either.

In EmailTooltester’s independent Email Detective data, beehiiv ranks #1 of 7 platforms for landing in Gmail’s Primary tab.

A few reasons why:

And yes, open and click tracking work on every send, so your analytics stay exactly where they are.

Pro tip: Want even more details on how your sends are landing? Use the beehiiv MCP and ask your AI tool: “Break down my last five sends by inbox provider and flag anything that looks off.” You’ll see how Gmail, Yahoo, Outlook, and Apple handled each one.

Expert care

Our sending engine is half of beehiiv Hex. The other half is the people running it.

Inbox providers don’t publish their rules, and they change them without warning. Our deliverability team watches how every inbox responds to every send, around the clock.

And we hire them the way we hire everyone at beehiiv: with a very high bar for judgment and expertise.

They’re active across the email industry and always learning. So when inbox providers change their rules, they adjust fast and your sends keep moving.

As email, bots, and AI evolve, this team is how beehiiv stays ahead.

Zero setup

You don’t have to do anything to send on beehiiv Hex. Keep writing, keep your sending healthy, and we’ll handle the move.

Your readers won’t notice a thing.

We spend a lot of time on new products and features, but we care just as much about the core infrastructure your business runs on: email.

That’s beehiiv Hex.