The AI-native email platform.

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.

Live in Claude? Same.
Now your email marketing does too.

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.

John Healy

"I don't need to be in nitrosend. I can just have a conversation through Claude."

My Speaking ScoreJohn Healy, Founder
RSRobert ScobleRobert Scoble@Scobleizer

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.

JMJack McManisJack McManisStartups at Anthropic

Excellent product and excellent team!

SBSarah BainbridgeSarah BainbridgeHead of Marketing, Obooko
10x faster AI email marketing without logging in

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.

Finlay Ekins

"The new wave of companies just go in headless. It's so cool."

Hourglass DigitalFinlay Ekins, Co-founder
CHCorey HainesCorey Haines@coreyhainesco

Marketing Skills v1.5.0 is out.

nitrosend — AI-native email, fully MCP-controlled. Build sequences, campaigns, and automations by prompting. No dashboard.

HMHailey MasonHailey MasonCo-Founder & CEO at Evatto

It's so bloody good! EDMs were the bane of my existence before this!

JFJohn F.
Perfect transition from Klaviyo

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 Staff
SSantiagoSantiago@svpino

I'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!

MSMark SmithMark SmithFounder, Greywolf Agency

Proudly beta user. Easy to work with, and what a team. So quick with updates and fixes for my broken workflows. Well played sir!

RGRenat G.Founder at Represent
Super smooth setup

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, Founder
KAKrishna AgrawalKrishna Agrawal@Krishnasagrawal

We 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.

BABen ArmstrongBen ArmstrongManaging Partner at Archangel Ventures

Glad to be backing this great team in reinventing one of the most ubiquitous forms of communication at scale.

VUVerified UserVenture Capital & Private Equity
Seamless MCP connection, smooth delivery

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."

Modern School of Ancient ArtsBiela McMillan, Founder
JBJay BisenJay Bisen@JayBisen473370

Email marketing stops being a tool you operate, and becomes something you simply prompt.

TNThea NgoThea NgoInvestor, Host of Founders In Motion

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."

Go-to-market for Shopify appsOhad Michaeli, Consultant
PGParul GautamParul Gautam@Parul_Gautam7

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.

RGRenat GabitovRenat GabitovFounder at Represent

The email is changing with AI too. Finally.

Mark Smith

"The way you set up the onboarding was awesome. The level of detail."

Greywolf AgencyMark Smith, Founder
CTChidanand TripathiChidanand Tripathi@thetripathi58

The 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.

GTGaurav ThapaGaurav ThapaCo-Founder at Fastlane

Uh oh… RIP Klaviyo 💀💀

"Better than copy pasting into beehiiv. Amazing."

Kids TableMaor Chester, Founder
AArsalanArsalan@AIwithArsalan

Removing the dashboard entirely and turning email marketing into a simple conversation with Claude.

Arshad Zacky

"Everything connected back to Claude."

Pathway PropertyArshad Zacky, Director
CRCharles RomanCharles Roman@pumpkherm

One 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, Founder
STSripathi TejaSripathi Teja@sripathiteja4

Most 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."

Grey Wolf AgencyMark, Founder
FFELIXFELIX@FellMentKE

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."

Elita GeneticsPaloma, Founder
DQDon Quijote de la IADon Quijote de la IA@IA_Quijote

Imagine a MailChimp inside Claude.

You just describe it and emails are created with flawless branding images.

Delightfully prompted design.

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.

Pixel-perfect on-brand email design generated by Nitrosend AI from a natural-language prompt
Nitrosend Flows dashboard automating multi-step email sequences for onboarding, password resets and transactional sends

Transactional, marketing and multi-brand work. One prompt.

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.

Gets smarter every send.

Every open, click, and reply teaches NitroWheel LLM. Subject lines, send times and content are continuously optimised without you lifting a finger.

NitroWheel LLM dashboard with engagement metrics, AI insights and performance recommendations
Nitrosend integrations directory for bringing your own sending keys with Mailgun, Amazon SES, Postmark, Resend and SendGrid

Bring your own everything.

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.

Pristine deliverability. Enterprise level reliability.

When you embed an email provider in your stack, you're trusting them with your customer relationships.

99.99%Uptime

Infrastructure that processes 700B+ emails per year. Enterprise-grade, always on.

AutoAuthentication

DKIM, SPF, and DMARC configured automatically. Dedicated IPs available. Auto-warmup from day one.

SplitStreams

Transactional and marketing on separate infrastructure. Password resets never compete with newsletters.

George, Kam and Ed - the nitrosend team

It's our third rodeo.

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.

George HartleyDesigner. Ex-CEO & Co-founder SmartrMail. Co-founder Bluethumb. Founder Email Marketing Skill for Claude.
Kam LowDeveloper. Ex-CTO SmartrMail (6B emails, acquired 2022).
Edward HartleyOperations. Ex-CEO Bluethumb. Co-founder SmartrMail. Ex-CEO Sendicate Email (28K users).

Simple pricing. Unlimited contacts.

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
$0
forever
  • Emails 8,000then 500/mo
  • Email types Transactional & Marketing
  • AI actions 20/mo
  • Contacts Free & Unlimited
  • Brands 1
  • Seats 1
Start free
Ultra
$100
per month
  • Emails 125,000/month
  • AI actions 5,000/mo
  • Brands 5
  • Seats 10 · Domains 3
  • Frontier AI Included
  • Dedicated IP Included
Get started
Enterprise
$300
per month
  • AI actions Unlimited
  • Unlimited brands & domains Included
  • SSO / SAML Included
  • 99.9% SLA Included
Get started

Free forever. No credit card required. See full comparison →

AI-native email.

One command. Full email stack. Stop configuring, start shipping.

$ claude mcp add --transport http nitrosend https://api.nitrosend.com/mcp