Resend Was Built for Developers. AI Made It a Marketer's Dream.

Here's the part of this story that matters most: I didn't use Resend before AI and then watch it get better. I only found Resend as AI was arriving, and I would never have attempted it without AI. Resend is an email platform built API-first for developers. The product is the API. Developers rave about it the way they rave about Stripe. But for a marketer, an API-first product has always meant one thing: not for you.

What changed is that I was already doing so much of my work through AI that a thought occurred to me: why not send email the same way? I was drafting in AI, planning in AI, working out of a system that already knew my company. Pushing the actual send through a tool AI could operate directly felt like the obvious next step. People raved about Resend, so I tried it. AI read the docs I never would have. AI wired the connection I never could have. And it worked.

That is the unlock, and it is bigger than email. AI didn't make my email tool smarter. It made an entire class of developer tools available to a marketer for the first time. Every API-first product you've scrolled past because "that's for engineers" is now something you can actually run.

This isn't a side experiment. All of our prospect emails, customer emails, product update announcements, and the daily emails for my 100-day challenge go through Resend. If it's not a one-on-one email written by hand, it runs through this system.

Here's what the workflow actually looks like. We already work out of an AI system that holds our company's intelligence: our positioning, our voice, our customers, our segments, what we've already shipped and said. So when it's time to send something, I don't open an email builder and start from a blank canvas. I say "great, let's craft an email off of this, and here's what I want to do." The AI drafts the email with full context, builds the HTML to our brand, and creates it as a draft in Resend through Resend's MCP server, pointed at the right audience segment.

The email tool stopped being a destination I go to. It became a natural extension of the system I already work in. That's the "pretty powerful and pretty cool" part: the drafting, the design, and the delivery all happen in the same place my company's context already lives.

Before this, we sent through HubSpot. And to be clear, I love that HubSpot offers a free email tool. This isn't a knock on them. But the workflow was the workflow: go into the platform, design the email by hand, and fight through a UI for every aesthetic change. It took real time, every send.

That experience taught me something I now apply to every tool decision: UIs are less and less important to me. What I care about is whether a product lets me connect it to the right tools and sources in my AI system, because everything I do is intertwined with that system now. The UI used to be the product. Now the connection is the product.

That's a genuinely new way to evaluate marketing software, and most buying guides haven't caught up to it. The question isn't "is the editor nice?" anymore. The question is "can my AI operate this thing on my behalf?" Resend answers that question better than any marketing tool I've used, which is funny, because it was never trying to be a marketing tool at all.

Now the part everyone gets nervous about. No, AI does not send email for us. Every broadcast gets created as a draft. I go into the Resend interface, review it, send test emails to myself, proofread, and press send myself. Just like anything, you need to proofread it. Even work done entirely by a human gets edited before it goes out. Why would AI work be different?

But there's a deeper principle here than proofreading, and it's the same one I apply to writing articles with AI: just because you can have AI make the thing, automate the thing, and ship the thing doesn't mean you should remove yourself from it. Your heart and soul, your point of view, your story need to be part of whatever you're building. AI can edit, design, and expedite all of it.

And that's exactly where this gets exciting instead of scary. The hours AI gives back on editing and design and HTML-wrangling don't disappear. They're yours again, to spend on the only part of email that was ever worth the most: telling the right story, your story, with your point of view. The mechanics got cheap. The perspective is still expensive, and it's still yours.

If you're reading this thinking "Resend is a developer tool, I'm not technical, this isn't for me," I want to push back directly: that excuse is gone. My philosophy is that every marketer needs to be a builder now. Just because you weren't a developer doesn't mean you can lean on that anymore. You are a builder, and you have to be in today's market. That's just how it works.

Obviously, work with your development team. Every company is different, and you should respect how yours handles tools, domains, and data. But "I don't code" stopped being a wall the day AI started reading documentation for you.

If you want to feel this for yourself, the path is short. Resend has a free tier, so trying it costs nothing. Open an AI tool that can connect to it, like Claude, and ask it to help you set up Resend's MCP server. Then ask it to draft your next announcement as a Resend draft. Review it, send yourself a test, and press send. That first send changes how you see every "developer tool" you've ever scrolled past. If you've already spent an hour in Claude Code, you're closer than you think.