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Rowsend MCP server

Rowsend MCP server

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Rowsend MCP server

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Rowsend is a desktop app for marketing email. It reads contacts from your own database (Postgres on Supabase or Neon, MySQL, PlanetScale, MongoDB or Firebase Auth) and sends through your own provider (SES, Postmark, Mailgun or SMTP). Contacts and keys stay on your computer.

This package connects an MCP client such as Claude Desktop, Cursor or Claude Code to the Rowsend app. Agents can connect your database, write campaigns in your brand, preview them and send you a test. You click Send in the app.

Requirements

Related MCP server: @sendraven/mcp

Install

Claude Desktop, Cursor or any client with an mcpServers setting:

{
  "mcpServers": {
    "rowsend": { "command": "npx", "args": ["-y", "@rowsend/mcp"] }
  }
}

Claude Code:

claude mcp add rowsend -- npx -y @rowsend/mcp

Plugins for Claude Code and Codex

The plugin adds the MCP server and a rowsend-setup skill. The skill walks your agent through connecting your database and sender and drafting a first campaign.

Claude Code:

claude plugin marketplace add rowsend/mcp
claude plugin install rowsend@rowsend

Codex:

codex plugin marketplace add rowsend/mcp
codex plugin add rowsend@rowsend

The first time the client connects, Rowsend asks you to allow it. Click Allow. Rowsend keeps that client's token encrypted on your computer, so it asks only once. To cut a client off, revoke it in Rowsend → Settings → MCP.

If Rowsend is somewhere other than Applications, set ROWSEND_APP to its path, such as /Users/you/Apps/Rowsend.app.

What agents can do

Area

Tools

Projects

list_projects, create_project

Database

prepare_database_setup, complete_database_setup, open_database_setup, get_pending_setup, list_database_fields, set_contact_fields, get_data_source_status, sync_contacts, set_sync_interval

Sending setup

open_sender_setup, get_sender, verify_sender, setup_ses_bounce, setup_postmark_webhook, set_sending_limits

Contacts

list_contacts, list_segments, create_segment, preview_audience, add_suppression

Topics

list_topics, create_topic

Content

get_brand, list_templates, get_template, create_template, update_template, list_images, upload_image, preview_email

Campaigns

list_campaigns, get_campaign, create_campaign, update_campaign, duplicate_campaign, send_test, get_campaign_stats, pause_campaign, resume_campaign, cancel_campaign, retry_failures

What agents can't do

  • Send or schedule a campaign. Only you can, in the app.

  • Delete anything.

  • See or type a password or API key. Rowsend opens its own screens for you to paste them.

  • Turn off the unsubscribe footer, edit a segment or undo an unsubscribe.

The full guide is at rowsend.com/docs/agents/mcp.

How it works

Rowsend runs its MCP server inside the app, on 127.0.0.1 only. This package finds the app and starts it with --mcp-stdio, which passes messages between your client's stdin and stdout and that local server. If Rowsend isn't running, it opens in the background.

License

MIT. This license covers this launcher. The Rowsend app has its own terms.

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

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Resources

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