Daily AI Email Campaigns: Groq + Gmail in n8n Workflow

Generate a daily, AI-written marketing email and send it automatically via Gmail—powered by Groq inside n8n.

This n8n workflow runs every day at 9:00 AM to create a campaign email using Groq + LangChain (strict JSON output: campaign type, subject, and body), then delivers the result to your recipients through Gmail. No manual drafting each morning—just schedule, configure, and go.

What this workflow does

• Scheduled daily execution: Uses a schedule trigger to run at 9:00 AM (cron can be adjusted).
• Loads campaign settings: Reads your brand, audience, segments, key dates, links, and the recipient list from a configurable Campaign Config block.
• Groq-powered segment selection + email generation: Uses a Groq-hosted chat model through a LangChain agent to pick the best segment for today and generate the email content as strict JSON.
• Validates and safely handles errors: Parses and validates the JSON output; if malformed, it falls back to safe defaults.
• Sends via Gmail: Sends the generated subject and body to your configured recipients.

Use cases

• Send daily promotional emails based on segments and key dates (e.g., launches, holidays, reminders).
• Maintain consistent brand voice and campaign structure using a Groq/LangChain agent-driven output format.
• For SaaS operators and automation engineers: productionize a repeatable AI email campaign workflow in n8n.

Technical details

• Nodes / tooling: schedule trigger, set, code, gmail, sticky note, and n8n-nodes-langchainagent.
• Integrations: Groq (chat model via LangChain agent) and Gmail (OAuth2 send permissions).
• Setup requirements: Groq API credentials, connected Gmail account with send access, and your campaign/brand data in Campaign Config.