Plainmail for VS Code

dev.plainmail/mail

Email on your own domains: add a domain, write its DNS, create mailboxes, read and send mail.

client:VS Code transport:streamable-http

Install Plainmail in VS Code

.vscode/mcp.json

{
  "servers": {
    "mail": {
      "type": "http",
      "url": "https://app.plainmail.dev/api/mcp/mcp"
    }
  }
}

Requires agent mode. MCP: Open User Configuration puts the same block in every workspace. VS Code docs