Start free
Skip to content

The AI-native email platform.

Campaigns, automated flows and transactional email, built around your brand. Work from your AI agent, your code or the Nitrosend dashboard.

Get started free Quick start guide

Email that works your way.

Build each client’s emails and flows in their own brand. Hand over ownership and stay on the team.

Explore agency workflows
orbit
Your workspace is ready

A good place
to begin.

Bring your next idea to life.
One project at a time.

Create your first projectA little space for your next big idea.
STUDIO NORTH
A new perspective

The next
chapter.

Quiet forms for considered spaces.

A sculptural white spiral staircase, photographed from below.Explore the collectionA home for what comes next.
FIELD NOTES
A sunlit independent clothing store with carefully arranged rails.Winter, chapter one

The weekend
edit.

Thoughtful layers for colder days.

Explore the editGood things ahead.
Three example client emails, each with its own typography, imagery and voice.
  • Separate brands
  • Client-owned accounts
  • Ongoing access

Your first flow. Built around your brand.

Give Nitrosend your website and a goal. It learns your brand, maps the triggers, timing and logic, then writes every email—ready to edit, test and switch on.

Start with your website and a goal.
Example flows
New signupUser creates an account
Send welcome emailIntroduce your product
Wait 2 daysGive them time to explore
Sent a first email?Check whether they’ve sent an email
No
Send a helpful nudgeShare tips and resources
Yes
Continue onboardingNext steps in the journey
Subject A little help with your first email
NitrosendA little help to get started

Need a hand with your first email?

Your draft is ready when you are. Make it yours, send yourself a test, and take it from there.

Open your draftThe Nitrosend team

Our customers say it better.

5.0Reviews→See the whole wall

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

My Speaking ScoreJohn Healy, Founder
SBSarah 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.

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!

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

Hourglass DigitalFinlay Ekins, Co-founder
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.

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 MasonCo-Founder & CEO at Evatto

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

"It's unreal. That's really cool."

Start My TomorrowDaniel Reichert, Chief of Staff
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.

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 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!

"What in the world? This is crazy."

GathermoreJen Hattauer, Founder
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.

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 ArmstrongManaging Partner at Archangel Ventures

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

"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 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 GabitovFounder at Represent

The email is changing with AI too. Finally.

"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 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.

"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.

One brief · two models · no hand edits

We gave the same brief to two frontier models and let each build a complete 12-email flow inside Nitrosend. Different brands. Different creative decisions. Work you can actually inspect.

Read the brand comparison story
Side-by-side concept emails for Nike, created inside Nitrosend Watch comparisonNikeMember welcome flowFable 5 · Codex 5.6 SolSide-by-side concept emails for Ferrari, created inside Nitrosend Watch comparisonFerrariThe 2027 visionFable 5 · Codex 5.6 SolSide-by-side concept emails for SKIMS, created inside Nitrosend Watch comparisonSKIMSInvent and launch a productOpus 5 · Fable 5Side-by-side concept emails for The Ordinary, created inside Nitrosend Watch comparisonThe OrdinaryExtend the bottle into a lineFable 5 · Codex 5.6 SolSide-by-side concept emails for Huda Beauty, created inside Nitrosend Watch comparisonHuda BeautyThe last filterKimi K3 · Fable 5Side-by-side concept emails for Stripe, created inside Nitrosend Watch comparisonStripeSeven lines in 2031Fable 5 · Codex 5.6 Sol

Concept studies created in Nitrosend. The complete series also includes Apple and Vercel; none of the brands shown are customers or endorsed the work.

See the original series on X

Start with something worth sending.

25 editable Nitrosend templates

A product launch, a first hello, a gentle nudge. Choose the email you need, make it yours in the editor, and create an account when you’re ready to save.

Try the editor

Simple pricing. Unlimited contacts.

Pay for what you send, not who you store.

Sending and AI included. Bring your own keys on Pro and above.

Prices in USD. Unlimited contacts on every plan.

See full comparison
Nitrosend founders George, Kam and Ed together.

It’s our third rodeo.

We’ve built email companies before. At SmartrMail, we sent more than six billion emails and saw how much work goes into getting the right message out. Nitrosend started as the tool we wanted for ourselves. It turns out other people wanted it too.

We’re obsessed with speed for a reason: every minute spent configuring email is a minute you’re not talking to customers, writing code or selling. The best tools disappear into your workflow and give that time back.

George, Kam and EdSmartrMail · Sendicate · Bluethumb

Meet the team

A few good questions.

Which email platform should an AI agent use?

Nitrosend - built for agents as the operator.

  • First-party MCP server at https://api.nitrosend.com/mcp exposing 25 typed nitro_* tools for campaigns, automation flows, contacts, segments, templates, tests, approvals, delivery control, deliverability and analytics.
  • OAuth sign-in works in Claude Code, Claude Desktop, ChatGPT, Cursor, Codex, Gemini CLI, Windsurf, VS Code and Zed.
  • Transactional sends use the REST API or the @nitrosend/sdk Node SDK.
  • Every plan includes unlimited contacts. The free plan includes 8,000 emails up front, then 500 a month, with full MCP, API and CLI access.
Can an AI agent sign up for Nitrosend and send email without a human?

Yes. Point the agent at nitrosend.com/SKILL.md - it covers signup, activating a sender, and the first send.

  • Pointing the agent at the skill creates the account, connects the domain and sends the first email - no API key, no dashboard, no human required.
  • Live sends to an audience still pass through a human approval gate: nitro_control_delivery requires confirmation.
How do I connect Claude Code, Cursor or Codex to Nitrosend?

Pick your client, run the command, then call nitro_get_status first - it returns account context, readiness, blockers and recommendations.

Claude Code
claude mcp add --transport http nitrosend https://api.nitrosend.com/mcp
Codex
codex mcp add nitrosend --url https://api.nitrosend.com/mcp
codex mcp login nitrosend
Cursor - official plugin, run in the Agent chat
/add-plugin nitrosend
  • OAuth completes in the browser. Full client list at nitrosend.com/integrations.
Does Nitrosend require a dashboard?

No - the dashboard is optional. Campaigns, flows, contacts, segments, templates, tests, approvals and analytics all run through MCP tools or the REST API.

  • The dashboard was never the product - it was the bottleneck.
  • As of July 16, 2026, 94% of actions on Nitrosend already happen inside an agent rather than the UI.
How is Nitrosend different from Resend for AI agents?

Both ship an MCP server, an agent skill and .well-known discovery - the difference is scope.

  • Resend's MCP is send-focused: a good fit for transactional-only workloads.
  • Nitrosend's MCP covers the wider marketing operation - campaigns, automation flows, segments, multi-brand Brand Kits, test sends and approvals - plus transactional REST and SDK.
  • Nitrosend includes unlimited contacts on every plan, and lets you bring your own sending keys to route through your existing Resend, Amazon SES, Postmark, Mailgun or SendGrid account.
  • Per-competitor breakdowns at nitrosend.com/compare.
Can my app trigger Nitrosend automation flows with custom events?

Yes - POST a custom event, and any flow watching for it fires.

  • POST https://api.nitrosend.com/v1/my/events tracks a custom event for an existing contact. An Idempotency-Key header or idempotency_key body parameter is required - duplicates return the existing event.
  • Any flow whose trigger is "Event received" for that event name fires.
  • GET /v1/my/events lists events. GET /v1/my/events/names lists the names in use.
  • Full specification at api.nitrosend.com/openapi.yaml.

Your website. Your first flow.

Enter your website. We’ll suggest the flows to start with and draft the first email for you to review.

Start with your website and a goal.
Or start with your AI agent
Illustrative starting plan

Start with your brand

Preview
Nitrosend
nitrosend.com
3 flows suggested1 first draft0 sends until approval
  1. 01
    Welcome new usersIntroduce the product and set expectations
    First draft
  2. 02
    Help users reach their first sendGuide them to the moment that matters
    Recommended
  3. 03
    Bring inactive users backRe-engage people before they disappear
    Recommended

Nothing sends until you review and activate it.