Night sky over a dark plain, a broad sodium-orange glow spread through the low clouds under an anthracite star field

The terminal-first email platform

Stop clicking your newsletter. Pipe it.

Drive your whole email workflow from Claude, Cursor, Codex, or any MCP client. You write the intent. Your agent runs the send.

Start free — 3,000 emails/mo Read the docs

62 MCP tools TypeScript SDK EU-hosted No credit card

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claude — sodium 62 MCP tools connected

$ claude

❯Send this week’s issue to everyone who opened the last three

⏺draft_campaignsubject lines + body drafted

⏺segment_subscribers3,104 matched

⏺schedule_sendTuesday 08:00

✓ Done in 9 seconds — review and send with one word.

❯Send it

✓ Sent to 3,104 subscribers · est. open rate 46.8%

Manifesto

Email tools were drawn for the click era. Six screens to send one letter. You were not.

No panel to memorise. No drag-and-drop ceremony. One sentence of intent, and a platform that carries it out.

— the shell was always enough.

How it works

Three steps. Then you just talk.

Connect

Run the guided setup, then pick MCP, Skill + CLI, or both at once.

Prompt

Say what should go out — the agent drafts, segments and schedules with 62 tools.

Ship

Read it back, say send, watch the numbers land. No panel tour required.

The platform

Everything a newsletter needs.
Nothing a dashboard demands.

MCP server

Hands Claude, Cursor and any compatible client direct use of 62 organisation-aware Sodium tools.

AI editor

Drafts that keep your cadence, subject lines that get opened, grammar cleared in one pass. The blank page is gone.

Skill + CLI

One setup command teaches your agent the Sodium CLI and keeps every action printed in your terminal.

Workflows

Welcome sequences, drip series, conditional branches. Set the loop once — it runs while you sleep.

Live segments

Filter on behaviour, tags, custom fields, engagement. Write to the readers who lean in, not to the whole list.

Open analytics

Opens, clicks, growth — queryable from the panel, the REST API, or a single line in your shell.

Agent integrations

MCP or Skill + CLI. Your call.

Run one guided command, choose MCP, Skill + CLI, or both, and let your agent reach Sodium from its own native tools.

terminal

$ pnpm dlx sodium setup

How do you want to integrate Sodium?
  1) MCP
  2) Skill (CLI)
  3) Both

Choice > 3
✓ MCP server registered
✓ Skill + CLI configured
✓ Setup complete

// .mcp.json
{
  "mcpServers": {
    "sodium": {
      "command": "npx",
      "args": ["-y", "@sodium/mcp"],
      "env": { "SODIUM_TOKEN": "sk_live_…" }
    }
  }
}
✓ 62 tools exposed to the client

$ sodium campaigns draft --from notes.md
drafting…
✓ draft cmp_8f21 · 3 subject lines proposed

$ sodium segments new "opened-3x" --window 30d
✓ segment seg_4a90 · 3,104 subscribers

$ sodium send cmp_8f21 --to seg_4a90 --at "tue 08:00"
✓ scheduled

import { Sodium } from "@sodium/sdk";

const sodium = new Sodium(process.env.SODIUM_TOKEN);

const segment = await sodium.segments.create({
  name: "opened-3x",
  where: { opens: { gte: 3 }, window: "30d" },
});

await sodium.campaigns.send("cmp_8f21", { to: segment.id });
✓ 3,104 recipients queued

MCP guide · guided Skill + CLI setup · 62 tools →

Integrations

Works inside your AI apps.

Use MCP for direct tool access, or install the Sodium skill and CLI with a single guided command.

Codex

Skill registry + Sodium CLI

AI page builder

Describe a page.
Watch it exist.

Landing pages used to cost a weekend. Now they cost a sentence. Talk to the builder, watch the page assemble in live preview, publish when it feels right — versioned, rollback-safe, wired straight into your list.

→ Live preview while it builds → Publish, roll back, iterate → Every visitor lands in your audience

Ribbons of sodium-orange light streaking across a dark night landscape

❯A launch page for my Rust course. Dark, one email field.

⏺ generating — hero, proof, capture form…

✓ Live at sodium.sh/c/rust — collecting subscribers.

Demo

Up and running in under a minute.

sodium.sh — first send

0:00 Install pnpm dlx sodium setup
0:11 Connect MCP server registered, 62 tools live
0:29 Draft one prompt, three subject lines back
0:52 Send 3,104 recipients queued

from prompt to scheduled campaign

free emails every month, no card required

panels you must open in order to ship

MCP tools your agent can call

Long-exposure star field, dense over an anthracite ground, threaded with sodium-orange and amber filaments

Sodium has no founder photograph on this page.

From the makers

Why we built Sodium.

We ran newsletters for years beside the code we shipped. Every platform we tried was either too heavy, too closed, or drawn for a marketing team we did not have.

None of them met us where we already worked. We wanted to run a list from the same shell as the build, not from six browser tabs.

So we wrote Sodium. 62 MCP tools, a full REST API, and an editor that earns its place.

the Sodium team Written collectively. Sodium is a team, not a person.

Plans

Simple pricing, no surprises.

Start free with 3,000 emails a month. Move up only when the volume asks for it.

Free

For one person and a list that is just getting started

$0/month

Unlimited subscribers
3,000 emails included
2 sending domains
5 workflows
100 AI credits per month

Start free

Standard

Most picked

For a growing list and a team that sends every week

$18/month

Unlimited subscribers
25,000 emails included · then $0.60/1,000
10 sending domains
Unlimited workflows
1,000 AI credits per month

Start with Standard

Scale

For high volume, several brands and a shared inbox reputation

$180/month

Unlimited subscribers
500,000 emails included · then $0.40/1,000
Unlimited domains
Unlimited workflows
10,000 AI credits per month

Start with Scale

Estimate

Calculate your price.

Move your monthly volume to see the cheapest plan for the sending you actually do.

Monthly emails 50,000

Best fit

Standard — $33/month

25,000 included · then $0.60 per 1,000

FAQ

Questions & answers.

What does terminal-first actually mean?

Sodium was drawn for the shell before it was drawn for a browser; 62 MCP tools let Claude, Cursor, Codex or any agent run your list directly. A web panel exists as well, but it is optional, never the path.

How does the MCP integration work?

One guided command writes the server into your client config and stores a scoped token. From then on your agent sees campaigns, segments, workflows and analytics as ordinary tools, with organisation-level permissions applied on every call.

Do I have to be a developer to use it?

No. If you can hold a conversation with an AI assistant, you can run a Sodium list: the agent handles the commands. The CLI and the SDK are there for the people who want them.

What can I do with the 62 tools?

Draft and schedule campaigns, build and refresh segments, manage subscribers and custom fields, arm workflows, verify domains, and read every metric, each one callable in a sentence rather than a screen.

Is the free plan really free?

Yes: 3,000 emails a month, unlimited subscribers, no card. It is not a trial that expires; it is the shape of the product for a small list.

How is Sodium different from the usual platforms?

They price the audience and hide the work behind a panel. Sodium prices the sending, keeps every action scriptable, hosts in the EU, and never charges you for a subscriber who is simply on the list.

A sodium-orange halo diffusing through night mist above a dark plain

Turn the lamp on.

Your first send is one sentence away.