Turn Paper designs into Resend emails

Paper Desktop runs a local MCP server at http://127.0.0.1:29979/mcp whenever a file is open.

/plugin marketplace add paper-design/agent-plugins
/plugin install paper-desktop@paper

claude mcp add paper --transport http http://127.0.0.1:29979/mcp --scope user

codex plugin marketplace add paper-design/agent-plugins
/plugins

{
  "mcpServers": {
    "paper": {
      "command": "npx",
      "args": ["mcp-remote", "http://127.0.0.1:29979/mcp"]
    }
  }
}

See the Paper MCP docs for other clients.

Connect to Resend's hosted MCP server at https://mcp.resend.com/mcp. When you connect, your client opens a browser window to log in to Resend and approve access.

claude mcp add --transport http resend https://mcp.resend.com/mcp

codex mcp add resend --url https://mcp.resend.com/mcp

{
  "mcpServers": {
    "resend": {
      "url": "https://mcp.resend.com/mcp"
    }
  }
}

https://mcp.resend.com/mcp

For more clients and configuration options, including running the server locally, see the MCP Server overview.

Design your email as an artboard in Paper. A few tips for designs that translate well to email:

• Use a single-column layout around 600px wide.
• Use real copy instead of placeholder text.
• Use web-safe fonts like System Sans-Serif or System Serif.
• Use PNG or JPG images instead of SVGs (not supported in email).

You can create either a Template or a Broadcast.

To create a template, select an artboard in Paper and with both servers connected, prompt your agent with the following:

Look at the selected artboard in Paper and recreate it as an email template
in Resend. Convert the design to email-safe HTML (inline styles, table-based
layout) using the Resend agent skills. Provide a name, subject, and preview text for the template that fits the content. Publish the template.

Behind the scenes, the agent will:

1. Call Paper's get_selection and get_screenshot to see the design.
2. Call Paper's get_jsx or get_computed_styles to read the exact layout, colors, and copy.
3. Convert the output into email-safe HTML.
4. Call Resend's create-template with the HTML, name, and subject.
5. Call Resend's publish-template to make it available for sending.

Templates support variables using triple-brace syntax, like {{{USERNAME}}}. Once published, you can send the template via the Emails API or the dashboard.

To create a Broadcast and go from design to a campaign instead:

Look at the selected artboard in Paper and create a Resend broadcast from it.
Convert the design to email-safe HTML using the Resend agent skills. Provide a name, subject, and preview text for the template that fits the content. Create it as a
draft, don't send it yet.

The agent reads the design the same way, then calls Resend's create-broadcast with the HTML, sender, subject, and segment. You can review the draft in the Resend dashboard before sending it yourself.

Templates and Broadcasts created by your agent are editable in the Resend dashboard. If you want your agent's content to be fully editable in the visual editor, ask it to use compose-template or compose-broadcast instead of raw HTML. You'll see the agent appear as a named avatar in the editor while it works, and you can hand-tune the result afterwards.

Alternatively, you can edit the Template or Broadcast in the Resend dashboard. Select the Editor icon in the top lefthand corner and Hold to confirm and convert the HTML to a visual template or broadcast.