Disposable email for humans and agents.

An instant throwaway inbox for sign-ups, codes, and confirmations — with a REST API, CLI, and MCP server so your agents can read it too.

Give your agent its own inbox.

Humans and agents share the same mailbox. Drive it from the terminal, or plug the MCP server into Claude, Cursor, or any MCP client.

# create a mailbox
npx @smails/cli create

# list and read messages
npx @smails/cli inbox
npx @smails/cli read <id>

{
  "mcpServers": {
    "smails": {
      "command": "npx",
      "args": ["@smails/cli", "mcp"]
    }
  }
}

Or just call the API.

No SDK required. Create a mailbox, then poll or stream messages with the returned token.

# create a mailbox
curl -X POST https://smails.dev/api/mailbox
# → { "address": "...", "token": "..." }

# list messages with the returned token
curl https://smails.dev/api/mailbox/messages \
  -H "Authorization: Bearer <token>"

# read one message (full parsed body)
curl https://smails.dev/api/mailbox/messages/<id> \
  -H "Authorization: Bearer <token>"