
"I don't need to be in nitrosend. I can just have a conversation through Claude."
For agencies, SaaS teams and builders running one brand or many: transactional email, flows and on-brand newsletters, all from Claude, ChatGPT or your AI agent.
Connect Claude Code, Cowork, ChatGPT, Codex, Cursor and any MCP-compatible agent. We're not an email tool with AI added. We're full stack email automation inside your AI agent, with human approval gates.
Transactional emails that took hours to build now take a prompt or two. Design that is pixel perfect, on brand, within Claude Code, Cursor and Codex. Detailed email performance analytics fed back into your own AI stack. Each brand keeps its own Brand Kit, domains, campaigns and audience context.

"I don't need to be in nitrosend. I can just have a conversation through Claude."
Founders that do email campaigns, this one is for you.
Have a project to market my AI news site and this is perfect for that.
Startups at AnthropicExcellent product and excellent team!
I use Claude to run all my email marketing with nitrosend. Seriously awesome, 10x faster than how I used to do newsletters as I'm getting AI to compose them, directly into nitrosend. Their MCP connection means I literally don't need to login anymore. I've got 840K authors and readers so cost of email is important, and it's affordable too.

"The new wave of companies just go in headless. It's so cool."
Hourglass DigitalFinlay Ekins, Co-founderMarketing Skills v1.5.0 is out.
nitrosend — AI-native email, fully MCP-controlled. Build sequences, campaigns, and automations by prompting. No dashboard.
Co-Founder & CEO at EvattoIt's so bloody good! EDMs were the bane of my existence before this!
I love how nitrosend lives inside Claude; one prompt builds a full email flow. It saves us hours by cutting out the need to drag blocks around in email builders like Klaviyo. The switch from Klaviyo was way smoother than expected, and now, obviously, we don't want to switch back.
"It's unreal. That's really cool."
Start My TomorrowDaniel Reichert, Chief of StaffI'm glad somebody is willing to break the rules and do something different.
We've always built for humans and enhanced with AI features. This goes the other direction: build something AI-first, enhance with human features.
Congrats on the launch!
Founder, Greywolf AgencyProudly beta user. Easy to work with, and what a team. So quick with updates and fixes for my broken workflows. Well played sir!
It automatically creates on-brand emails that meet our goals, without the need to manually create a hundred emails or set up triggers. The copy is done really well. The initial setup was super smooth, taking only about ten minutes.
"What in the world? This is crazy."
GathermoreJen Hattauer, FounderWe spent years learning Mailchimp, Klaviyo, ActiveCampaign, HubSpot.
Now people are just typing: "Launch my newsletter." And the entire workflow happens automatically.
Software is becoming a conversation.
Glad to be backing this great team in reinventing one of the most ubiquitous forms of communication at scale.
Connected straight onto my Claude which makes for a good user experience. Support is top notch and it delivers the emails really smoothly, first pass AI is usually already really great. Much cheaper than Klaviyo.
"It's been super clear and really excellent. Oh my god, I love that."
Email marketing stops being a tool you operate, and becomes something you simply prompt.
The best AI native workflow for the most important modality for anyone to engage with their community.
"I migrated from MailerLite because I didn't want another dashboard, and the drag-and-drop builder was so tacky. I just set it up once, and now Claude knows which template to use. My emails are 90% created automatically now. It saves me time."
Most email tools added AI as a feature. Nitrosend feels like it was built the other way around, AI first, email second.
Creating complete email flows directly from Claude is a glimpse of where agent-native software is heading.
The email is changing with AI too. Finally.

"The way you set up the onboarding was awesome. The level of detail."
Greywolf AgencyMark Smith, FounderThe moment I have to open an email builder, I lose all motivation. Nitrosend skips that entire process.
Just describe what you want, Claude builds it, and it's ready to send.
Co-Founder at FastlaneUh oh… RIP Klaviyo 💀💀
"Better than copy pasting into beehiiv. Amazing."
Kids TableMaor Chester, FounderRemoving the dashboard entirely and turning email marketing into a simple conversation with Claude.

"Everything connected back to Claude."
Pathway PropertyArshad Zacky, DirectorOne prompt replacing an entire email workflow is a powerful idea.
"I think that will work really well with what you're doing here."
OpenRealEstate.aiKieren Coates, FounderMost AI email tools give you emails that feel generated. Nitrosend creates emails that look exactly like your brand, stay fully editable, and land in inboxes reliably.
"I don't want another dashboard. That's why I moved from MailerLite to nitrosend."
Building email flows has always been the worst part of growth.
Nitrosend letting you one shot entire campaigns from Claude with pixel perfect design is the hostage rescue we needed.
"Creating drag and drop emails was so clunky. I love that I can just use Claude to create emails with nitrosend."
Imagine a MailChimp inside Claude.
You just describe it and emails are created with flawless branding images.
Not just an API. nitrosend generates pixel-perfect, brand-matched emails. Describe what you want in natural language. Get production-ready design in seconds. Your brand colors, your fonts, your logo. Automatically.
Transactional email AND marketing campaigns AND automation flows across every brand you run. Password resets, onboarding series and newsletters. One platform, one API, one prompt. Most tools make you choose.
Every open, click, and reply teaches NitroWheel LLM. Subject lines, send times and content are continuously optimised without you lifting a finger.
Your SendGrid, Postmark, Resend, Mailgun or SES for sending. Your Anthropic or OpenAI keys for AI. Full control across sending and generation. The best tools earn your loyalty, they don't trap you.
Every email is responsive, accessible, dark-mode ready, and on-brand. No template editor required.
When you embed an email provider in your stack, you're trusting them with your customer relationships.
Infrastructure that processes 700B+ emails per year. Enterprise-grade, always on.
DKIM, SPF, and DMARC configured automatically. Dedicated IPs available. Auto-warmup from day one.
Transactional and marketing on separate infrastructure. Password resets never compete with newsletters.
I really don't know why we love email so much.
Between us we've built two email platforms, sent over 6 billion emails, and scale three technology companies. We've been on both sides of the email stack. This is a tool we initially started for ourselves. We needed this, and it turns out other people wanted it too. So we're building it.
Every plan includes full stack emailing: Flows, Newsletter Campaigns and Transactional Email, plus our NitroWheel LLM and all agent integrations (Claude, ChatGPT, Codex, Cursor and others). Pay for what you send, not who you store.
Free forever. No credit card required. See full comparison →