Create & Send GA4 Report with Insights via Email

Description

Who’s it for
Marketing, growth, and analytics teams who want a decision-ready GA4 summary—automatically calculated, clearly color-coded, and emailed as a polished HTML report.

How it works / What it does
Get Client (Form Trigger)* collects *GA4 Property ID (“Account ID”), **Key Event, date ranges (current & previous), Client Name, and recipient email.
Overall Metrics This Period / Previous Period (GA4 Data API)** pull sessions, users, engagement, bounce rate, and more for each range.
Form Submits This Period / Previous Period (GA4 Data API)** fetch key-event counts for conversion comparisons.
Code** normalizes form dates for API requests.
AI Agent* builds a *valid HTML email**:
Calculates % deltas, applies green for positive (#10B981) and red for negative (#EF4444) changes.
Writes summary and recommendations.
Produces the final HTML only.
Send a message (Gmail)** sends the formatted HTML report to the specified email address with a contextual subject.

How to set up
1) Add credentials: Google Analytics OAuth2, OpenAI (Chat), Gmail OAuth2.
2) Ensure the form fields match your GA4 property and event names; “Account ID” = GA4 Property ID.
Property ID - https://take.ms/vO2MG
Key event - https://take.ms/hxwQi
3) Publish the form URL and run a test submission.

Requirements
GA4 property access (Viewer/Analyst) • OpenAI API key • Gmail account with send permission.

Resources
Google OAuth2 (GA4) – https://docs.n8n.io/integrations/builtin/credentials/google/oauth-generic/
OpenAI credentials – https://docs.n8n.io/integrations/builtin/credentials/openai/
Gmail OAuth2 – https://docs.n8n.io/integrations/builtin/credentials/google/
GA4 Data API overview – https://developers.google.com/analytics/devguides/reporting/data/v1