MailSnail

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-11-13T22:16:28.912188Z",
      "publishedAt": "2026-11-13T22:16:28.912188Z",
      "statusChangedAt": "2026-11-13T22:16:28.912188Z"
    }
  },
  "server": {
    "name": "io.github.iancollins27/mailsnail",
    "icons": [
      {
        "src": "https://mailsnail.dev/brand/mailsnail-icon-512.png",
        "sizes": [
          "512x512"
        ],
        "mimeType": "image/png"
      }
    ],
    "title": "MailSnail",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "remotes": [
      {
        "url": "https://api.mailsnail.dev/mcp",
        "type": "streamable-http"
      }
    ],
    "version": "0.6.2",
    "packages": [
      {
        "version": "0.6.0",
        "transport": {
          "type": "stdio"
        },
        "identifier": "mailsnail",
        "registryType": "npm",
        "registryBaseUrl": "https://registry.npmjs.org",
        "environmentVariables": [
          {
            "name": "MAIL_PROVIDER",
            "default": "managed",
            "isRequired": true,
            "description": "For self-hosting only; most people should add the hosted URL instead. 'click2mail' (your own account) or 'lob' (your own key). 'managed' needs a Stripe Shared Payment Token that most AI apps can't create."
          },
          {
            "name": "MAIL_API_BASE_URL",
            "default": "https://api.mailsnail.dev",
            "description": "Hosted Mailsnail backend. Required when MAIL_PROVIDER=managed."
          },
          {
            "name": "CLICK2MAIL_USERNAME",
            "description": "Click2Mail account username. Required when MAIL_PROVIDER=click2mail."
          },
          {
            "name": "CLICK2MAIL_PASSWORD",
            "isSecret": true,
            "description": "Click2Mail account password. Required when MAIL_PROVIDER=click2mail."
          },
          {
            "name": "LOB_API_KEY",
            "isSecret": true,
            "description": "Lob API key. Required when MAIL_PROVIDER=lob. test_* is free; live_* actually mails."
          },
          {
            "name": "MAIL_MCP_ALLOW_LIVE",
            "default": "0",
            "description": "Set to '1' to actually mail in BYOK modes. Default '0' is dry-run."
          },
          {
            "name": "MAIL_MCP_SPEND_CAP_USD",
            "default": "25",
            "description": "Per-session estimated spend cap. Server refuses sends past this."
          }
        ]
      }
    ],
    "repository": {
      "url": "https://github.com/iancollins27/mailsnail",
      "source": "github"
    },
    "websiteUrl": "https://mailsnail.dev",
    "description": "Send USPS letters & certified mail from any agent. Hosted: sign in, no install."
  }
}