Quickstart - Nitrosend

Get up and running with Nitrosend in under 5 minutes. Choose your path:

Info

All plans, including free plans, have full access to Nitrosend MCP/API/CLI. Plan limits still apply to send volume, seats, AI action allowances, and paid add-ons.

Tip

Are you an AI agent? Read the Agent Onboarding page for the full tool surface, send modes, and the headless signup-to-send path, or fetch the machine-readable skill at nitrosend.com/skill.md.

Quickstart with AI (recommended)

The fastest way to get started. Connect your AI tool and let it handle the setup.

1. Create your account

2. Connect your AI tool

Add Nitrosend as an MCP server, then sign in. Pick your tool:

Run one command in your terminal:

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

Then run /mcp inside Claude Code and complete the Nitrosend sign-in.

Add Nitrosend as a Custom Connector — not the CLI. In Claude Desktop, go to Settings → Connections → Customize → Add Connectors + → Add Custom Connector, then enter:

Name: nitrosend
Remote MCP URL: https://api.nitrosend.com/mcp

Click Connect and sign in when prompted. No API key needed.

Install the official Nitrosend app from the ChatGPT app directory, click Connect, and sign in — no config, no API key.

Install the Nitrosend app in ChatGPT →

Don't see the direct link? Open Settings → Apps in ChatGPT, search Nitrosend, and connect. Full walkthrough in the ChatGPT guide.

Add the server, then sign in:

codex mcp add nitrosend --url https://api.nitrosend.com/mcp
codex mcp login nitrosend

Codex CLI connects directly to the remote MCP server. For ChatGPT, use the ChatGPT tab.

Add Nitrosend to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this repo):

{
  "mcpServers": {
    "nitrosend": {
      "url": "https://api.nitrosend.com/mcp"
    }
  }
}

Restart Cursor. On first use it prompts you to sign in via OAuth.

Add Nitrosend to ~/.gemini/settings.json:

{
  "mcpServers": {
    "nitrosend": {
      "httpUrl": "https://api.nitrosend.com/mcp"
    }
  }
}

Restart Gemini CLI and sign in when prompted.

Using VS Code, Windsurf, Zed, or another client? See the full integration guides.

3. 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.

Tip

Other great first prompts:

"Check my account status and tell me what I need to set up"
"Create a 5-email welcome series for new subscribers"
"Send a test email to me@example.com"

Quickstart with the dashboard

Prefer to set things up manually? Here's the traditional path.

1. Create your account

Sign up at app.nitrosend.com and complete the onboarding wizard. This sets up your brand colors, logo, and sending domain.

2. Verify your domain

Add the DNS records shown in Brand > Domains to authenticate your sending domain. This ensures your emails land in the inbox, not spam.

3. Import contacts

Go to Contacts > Import and upload a CSV, or add contacts manually. Each contact needs at least an email address.

4. Create a template

Head to Templates and use the drag-and-drop editor to design your email. Your brand colors and logo are applied automatically.

5. Send a campaign

Go to Campaigns > New, select your template and audience, and hit send.

Using the REST API

If you prefer to integrate programmatically, grab your API key from Brand > API Keys and check the API Reference.

curl -X POST https://api.nitrosend.com/v1/my/messages \
  -H "Authorization: Bearer nskey_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "channel": "email",
    "to": "user@example.com",
    "subject": "Hello from Nitrosend",
    "html": "<h1>Welcome!</h1>",
    "body": "Welcome!"
  }'