The Rundown: Build an intelligent AI agent using the advanced Grok 4 model through n8n's workflow automation platform to handle complex tasks and conversations.

🧰 Who is this useful for:

• Business professionals who want to automate email drafting
• Entrepreneurs looking to streamline communication workflows
• Teams that need consistent email formatting and responses
• Anyone wanting to save time on repetitive email tasks

STEP 1: Set Up Your Workflow Foundation

Head over to n8n and start by creating a new workflow and adding a trigger. Click the plus button to add your first node and select “On chat message” as your trigger for easy testing.

Then add an AI Agent node by clicking the plus button and searching for “AI Agent.” This will be the brain of your automation, consisting of three key components: the model (for intelligence), memory (to remember conversations), and tools (for external integrations). Connect the agent to your chat trigger to enable communication flow.

STEP 2: Configure the Grok 4 Model

Scroll down and select “xAI Grok Chat Model” as your AI model. You'll need to create credentials by getting an API key from XAI's website and adding credits to your account. Choose “Grok-4-0709” for the most advanced reasoning capabilities.

This thinking model takes slightly longer to respond but provides superior problem-solving and contextual understanding compared to standard models.

STEP 3: Add Memory and Gmail Integration

Enable “Simple Memory” with 5 past interactions to help your agent maintain conversation context.

Then add a Gmail tool and select “Create Draft” as the operation (safer than direct sending for testing).

Set the subject, message, and recipient fields to “Defined automatically by the model” so the AI can intelligently fill these based on your chat requests. Choose HTML format for better email formatting and enable the AI to determine recipients automatically.

STEP 4: Test and Customize Your Agent

Test your agent by sending a message like “Draft an email to john@company.com asking for available meeting slots next week.” The AI will process your request, generate an appropriate subject line, compose a professional message, and create a draft in your Gmail.

Check your drafts folder to see the result. Add system messages in the AI Agent settings to customize the agent's writing style, email signatures, or specific formatting preferences for consistent branding.

Pro tip: Always start with draft creation rather than direct sending to test your agent’s output quality. Once you're satisfied with the results, you can switch to automatic sending for full automation.