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Nitrosend

The AI-native email marketing platform. Built for builders and marketers who want to run their email marketing from the AI tools they already use. Every ESP on the market was designed for humans to operate manually. You log in, click through menus, drag blocks, write copy, schedule sends. Nitrosend is different. It’s built from the ground up so that AI does the work.

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How Nitrosend works

Instead of logging into a dashboard, you stay in your AI tool — Claude, ChatGPT, Codex, Gemini, Cursor — and tell it what you want. Nitrosend connects via MCP (Model Context Protocol) and a REST API so your AI assistant has full access to your email marketing. 
You: "Create a 5-email welcome series for new subscribers"
Claude: Done. I've built the flow with a welcome email, 
        a 3-day follow-up, a product highlight on day 7, 
        a case study on day 10, and a special offer on day 14.
        Want me to send a test?
No dashboard. No drag-and-drop. Just tell AI what you need and it happens.

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What you can do

Send emails & campaigns

Compose, preview, test, and send — all through natural language prompts in your AI tool.

Build automation flows

Welcome series, abandoned cart, re-engagement — describe the flow, AI builds it.

Manage your audience

Import contacts, create segments, tag and organize — through conversation.

Connect via MCP

One-click MCP connection to Claude, Cowork, Claude Code, and more. REST API for everything else.

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What makes Nitrosend different

Other ESPs added GPT wrappers for subject lines and called it “AI features.” Nitrosend was built so AI is the primary interface. MCP integration means Claude, GPT, and Gemini can access every feature — campaigns, flows, templates, contacts, analytics — natively.
Nitrosend speaks MCP (Model Context Protocol), the open standard for connecting AI tools to external services. Connect once, and your AI assistant can manage your entire email operation. No coding, no middleware, no webhooks.
Set up your Brand Settings and AI Memory, and every email Nitrosend sends gets smarter. Your AI learns your tone, your audience, and your goals — then applies that context to every campaign, flow, and template it creates.
Claude Desktop, Claude Code, Claude Cowork, ChatGPT, Gemini, Codex CLI, Cursor — whatever you use, Nitrosend connects. MCP for Claude-family tools, REST API for everything else.

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Get started

1

Sign up

Create your account at app.nitrosend.com
2

Connect your AI tool

Add Nitrosend as a connector — no API key needed. Follow the guide for your tool: Claude Desktop · Claude Cowork · Claude Code · ChatGPT · Gemini · Codex
3

Sign in when prompted

Your AI tool will open a Nitrosend sign-in window. Log in with the account you created in step 1 — authentication is handled automatically.
4

Start prompting

Try this to get a full setup in one go:
Connect into Nitrosend and based on my brand, give me a suggested
email flow to set up and guide me through set up. Make the email
design modern and on brand against my website.
Your AI will scrape your brand, suggest a flow, build it, and walk you through sending a test.