n8n Newsletter Automation: Claude + Tavily Cited Research via Gmail

Turn newsletter briefs into Claude-written, Tavily-cited Gmail emails—automatically

This n8n workflow gathers a newsletter request, performs Tavily web research, and uses Anthropic Claude to write article sections with explicit citations. It then assembles a clean HTML newsletter and creates a Gmail draft or sends it immediately—so you can ship research-backed newsletters faster.

What this workflow does

• Collects input via an n8n form (topic, target audience, tone, and number of sections).
• Scans the topic with Tavily, sends results to Anthropic Claude, and generates a JSON plan (section titles + search queries).
• Iterates through each planned section: runs focused Tavily searches and asks Claude to write each section using only the provided search results and explicit citations.
• Validates and cleans content: removes any Claude-included links not present in Tavily’s returned URLs and sanitizes section HTML for safe, email-friendly tags.
• Assembles the newsletter: deduplicates sources into a single numbered list and generates summary takeaways.
• Writes email scaffolding (subject line, preheader, and intro) with Claude, then generates the final HTML newsletter.
• Delivers via Gmail: creates a Gmail draft by default or sends directly when delivery mode is set to "send".

Use cases

• Research-backed SaaS updates where every claim links to verifiable sources.
• Automation engineers producing recurring newsletters from structured form requests.
• Teams that want Claude writing plus Tavily URL validation to reduce citation drift.

Technical details

• Integrations/credentials: Anthropic (Claude steps for planning, writing sections, subject + intro) and Tavily (HTTP Bearer Auth using your Tavily API key).
• Workflow nodes: if, set, code, gmail, sticky note, form trigger.