Mailpiece with Claude Desktop

Talk your newsletter into shape in the Claude app.

Write your newsletter from Claude Desktop: talk the issue through and it lands in Mailpiece as a draft.

With Mailpiece

What you get

Turn these notes into a draft post
Tighten the draft and give it a better title
Send me a test
Schedule it for Friday morning
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Sign in

Build the CLI as the agents guide shows and make a read and write token under Profile › Personal access tokens, so Claude can draft, test and schedule. The account number is the one in the app's address.

mailpiece auth login TOKEN --account 834206594 --api-url https://app.example.com
mailpiece doctor

Connect

In Settings › Developer › Edit Config, add mailpiece with the full path to the binary. Then quit Claude and open it again.

{
  "mcpServers": {
    "mailpiece": {
      "command": "/usr/local/bin/mailpiece",
      "args": ["mcp", "--writes"]
    }
  }
}

Ask

"Turn these notes into a draft and schedule it for Friday morning."

Sending to the whole list can't be undone, so read what Claude is about to do before you let it.

Set it up this afternoon

Install Mailpiece on a server, connect Claude Desktop, and send your next issue.

Install Mailpiece