18 tools · 2 workflows · OAuth 2.1

The email platform your AI agent can operate

Give your agent native access to send emails, manage campaigns, build templates, and handle contacts. No API keys in config files. Paste a URL, enter your key once in the browser, done.

Get StartedView Source
mcp-config.json
{
  "mcpServers": {
    "transmit": {
      "type": "http",
      "url": "https://mcp.xmit.sh/mcp"
    }
  }
}

That's it. First connection opens your browser to enter your API key.

Works with every MCP client

Claude DesktopClaude CodeCursorWindsurfChatGPTCopilotOpenClaw

Connected in 30 seconds

No build step. No package to install. No API key to copy.

1

Paste the URL

Add the MCP server URL to your client config. One line of JSON.

"url": "https://mcp.xmit.sh/mcp"

2

Enter your API key

Your browser opens automatically. Paste your Transmit API key and click Authorize. One time only.

OAuth 2.1 with PKCE

3

Start prompting

Your agent now has access to 18 email tools. Send, build, manage, all by asking.

18 tools ready

Full platform access. Every tool.

18 tools and 2 guided workflows covering the entire Transmit API.

Transactional Email

Send emails with HTML or templates. CC, BCC, reply-to, custom sender.

send_email

Campaigns

Create, update, duplicate, and manage marketing campaigns. Schedule sends, track stats.

list_campaignsget_campaigncreate_campaignupdate_campaigndelete_campaignduplicate_campaign

Templates

Build reusable email templates with dynamic variables. Full CRUD operations.

list_templatesget_templatecreate_templateupdate_templatedelete_template

Contacts

Add contacts to your lists programmatically. Manage your audience.

add_contact

Senders

List and inspect verified sender identities across your domains.

list_sendersget_sender

Lists

Browse contact lists with subscriber counts and metadata.

get_lists

Suppressions

Check suppression status and manage bounced or complained addresses.

list_suppressionscheck_suppression

Guided Workflows

Built-in prompts that walk your agent through creating campaigns and templates step by step.

create-campaigncreate-template

Just tell your agent what to do

Real prompts you can use today. Your agent handles the API calls.

“Send a welcome email to new-user@acme.com with our onboarding template”

Transactional

“Create a product launch campaign for next Tuesday, use the 'announcement' template and send to the 'beta-users' list”

Campaigns

“Build an HTML template for order confirmations with orderId, customerName, and totalAmount variables”

Templates

“Check if bounce@example.com is suppressed and show me all suppressions from the last week”

Suppressions

“List all my senders, then duplicate last month's newsletter campaign with an updated subject line”

Multi-step

“Add these 3 contacts to the 'early-access' list and send each a personalized invite email”

Contacts

Not another local binary

Most MCP servers require npm install, API keys in env vars, and manual updates. Transmit is a remote server. Here is what that gets you.

Zero install

No npm, no build step, no binary. Just a URL. Works instantly in any MCP client.

OAuth 2.1 with PKCE

Enter your API key once in the browser. It gets encrypted server-side, never stored in your config. Tokens refresh automatically.

Always up to date

Remote server means new tools and fixes ship instantly. No version to update, ever.

Edge-native

Runs on Cloudflare Workers. Available in 300+ cities worldwide. No cold start delays.

Other MCP servers

  • ✗ npm install or npx required
  • ✗ API key stored in plaintext config
  • ✗ Manual updates for new features
  • ✗ Runs on your machine

Transmit MCP

  • ✓ Just a URL, nothing to install
  • ✓ API key entered once in browser, encrypted server-side
  • ✓ Updates ship instantly, server-side
  • ✓ Edge-deployed, 300+ global locations

Let your agent send email

Connect in 30 seconds. No install, no keys in config files, no maintenance.

Read the Docs

Open source on GitHub. Free tier includes 3,000 emails/mo.