Email for Claude.

Install nitrosend once, then run your entire email stack from a prompt. Works in Claude Code, Claude Desktop, ChatGPT, Codex, Cursor and Gemini.

Watch the 2-minute demoHow George set up welcome, Black Friday and receipts in one chat.
Claude Code
$ claude mcp add --transport http nitrosend https://api.nitrosend.com/mcp

Then prompt:
"Set up a welcome email series for my SaaS app"
Claude Desktop / Cowork
# Settings → Connectors → Add MCP server → https://api.nitrosend.com/mcp

Then prompt:
"Draft a launch email for our new feature and show me the preview"
ChatGPT
# Settings → Connectors → Add connector → https://api.nitrosend.com/mcp

Then prompt:
"Send a Black Friday campaign to my engaged subscribers, 20% off"
Codex
$ codex mcp add nitrosend https://api.nitrosend.com/mcp

Then prompt:
"Wire up a transactional receipt email to my Stripe webhook"
Cursor
{ "nitrosend": { "url": "https://api.nitrosend.com/mcp", "transport": "http" } }

Then prompt:
"Build a 5-step onboarding flow and trigger it on signup"
Gemini CLI
$ gemini mcp add nitrosend --transport http https://api.nitrosend.com/mcp

Then prompt:
"Find contacts who haven't opened in 60 days and re-engage them"
No agent? No problem.

Or set it up yourself in five minutes.

If you'd rather click than prompt, the dashboard walks you through the same install.

1

Sign up

Create a free account. No credit card. All integrations on every plan.

Sign up →
2

Connect your domain

Add your sending domain ([email protected]) and paste the three DNS records. Most domains verify in under a minute. Or skip and send from a free nitrosend subdomain.

3

Import your contacts

Upload a CSV, paste a list, or sync from Attio, Stripe or your product. Unlimited contacts on every plan.

4

Write your first campaign

Describe the email you want. Our AI drafts subject, preheader, copy and design in your brand. Edit visually or prompt it to iterate.

5

Send a test, then send it live

Preview light and dark mode, send a test, then hit send. Opens, clicks, replies and unsubscribes stream back live.

Start free →
Try these prompts

What to say once it's installed.

nitrosend exposes 19 tools. Your agent figures out which to call. You just describe what you want.

Campaign

"Launch Black Friday"

Draft a 3-email Black Friday sequence for our Pro plan, send a test to me, schedule the first for Friday 9am local time.

Flow

"Build welcome onboarding"

Build a 5-step welcome flow: day 0 welcome, day 1 getting started, day 3 case study, day 7 ask for feedback, day 14 upsell.

Segment

"Who is disengaging?"

Find contacts who opened in the last 90 days but clicked zero campaigns. Save as a re-engagement segment.

Analysis

"Why did opens drop?"

Compare last month's campaign open rates to this month's. Identify which subject lines and send times underperformed and why.

Transactional

"Send a receipt"

Send a branded receipt to [email protected] with line items [{...}] and total $129.

Ops

"How's deliverability?"

Check my sending reputation, bounce rate, and any domains that need attention. Fix what you can, flag what you can't.

Five minutes. Free to start.

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