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Langchain Email Agent

The `EmailAgent` class provides an AI-powered email composition and sending capability using LangCha

Rating: 4.6 (289 reviews)
Downloads: 518 downloads
Version: 1.0.0

Overview

The `EmailAgent` class provides an AI-powered email composition and sending capability using LangChain.

Complete Documentation

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EmailAgent README

Overview

The EmailAgent class provides an AI-powered email composition and sending capability using LangChain with OpenAI's GPT model. It includes human-in-the-loop middleware that requires approval before emails are sent.

Configuration

Environment Variables

Variable	Default	Description
OPENAI_MODEL	gpt-4o-mini	OpenAI model to use

Usage

typescript

import { EmailAgent } from './email.agent';
import { SendEmailDto } from '../dto/send-email.dto';

const agent = new EmailAgent();

const dto: SendEmailDto = {
  email: '[email protected]',
  name: 'John Doe',
  subject: 'Meeting Request',      // optional
  body: 'Initial email content',   // optional
  instructions: 'Keep it formal'   // optional
};

const result = await agent.sendEmail(dto);

Human-in-the-Loop Middleware

The agent uses humanInTheLoopMiddleware which interrupts execution on the EmailTool before sending emails. This allows for:

approve - Send the email as composed
edit - Modify the email before sending
reject - Cancel the email operation

The readEmailTool is excluded from interruption (false), allowing read operations to proceed without approval.

Parameters

Parameter	Type	Required	Description
email	string	Yes	Recipient email address
name	string	Yes	Recipient name
subject	string	No	Email subject line
body	string	No	Initial email body content
instructions	string	No	AI instructions for composing the email

Return Value

Returns the final message content from the agent as a string.

Installation

Terminal bash


openclaw install langchain-email-agent

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💻Code Examples

example.ts

import { EmailAgent } from './email.agent';
import { SendEmailDto } from '../dto/send-email.dto';

const agent = new EmailAgent();

const dto: SendEmailDto = {
  email: '[email protected]',
  name: 'John Doe',
  subject: 'Meeting Request',      // optional
  body: 'Initial email content',   // optional
  instructions: 'Keep it formal'   // optional
};

const result = await agent.sendEmail(dto);