langchain-sendmux

LangChain toolkit for Sendmux, the email API for AI agents. Give a LangChain agent tools to send email and read its own inbox.

Installation

pip install langchain-sendmux

Usage

import os

from langchain.agents import create_agent
from langchain_sendmux import SendmuxToolkit

smx = SendmuxToolkit(api_key=os.environ["SENDMUX_API_KEY"])

agent = create_agent(
    model="gpt-4o",
    tools=smx.get_tools(),
    system_prompt="You triage the support inbox.",
)

agent.invoke({"messages": [{"role": "user", "content": "Reply to Sarah."}]})

Tools

SendmuxToolkit(api_key=...).get_tools() returns three tools:

  • send_email - send an email to any recipient through Sendmux.
  • list_messages - list recent messages in the agent's mailbox.
  • reply - send a message from the agent's own mailbox.

Configuration

  • api_key (required) - a send + receive capable mailbox API key (smx_mbx_*) or a scoped agent token.
  • default_from (optional) - default From address for send_email when a call omits var_from.

Licence

MIT. See the licence file.

Project links

Data verified by PyPI on Jul 22, 2026
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Key dates

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  • Released:
Newer release available (0.2.1)

1 maintainer

PyPI data
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Avatar for roshanjonah from gravatar.com roshanjonah

GitHub Statistics

Data verified by PyPI on Jul 22, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

MIT
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Requires

Python >=3.10

Classifiers

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