Automation case study

Homeowner Email Triage

A construction-coordination workflow that classifies incoming homeowner emails, automatically sends a professional acknowledgement, and flags anything that requires builder or human review before it slips through the cracks.

Self-initiated portfolio build Construction coordination Human review stays in control

At a glance

Reads & classifies

Incoming homeowner emails are classified using the documented workflow logic.

Logs

Relevant message and workflow information is recorded for visibility.

Acknowledges

A professional acknowledgement is automatically sent after the message is received.

Escalates

Urgent, uncertain, financial and contractual items are routed for human review.

Client type: Residential builder, QLD — homeowners emailing about their build.

The problem

Homeowner emails can arrive alongside site questions, defect reports, urgent issues, selections, payment queries and requests for decisions. Without a consistent triage layer, a critical message can sit beside a routine question with no clear priority or recorded next action.

The coordination problem is not simply volume. It is keeping the message, category, urgency, response status and human decision point visible while the builder continues running jobs.

How the system works

The documented build uses Gmail, structured AI classification, category and confidence routing, Google Sheets logging, automatic acknowledgement handling, builder alerts and an error path.

Workflow diagram showing Gmail input, AI classification, category and confidence routing, acknowledgement, human review, builder alerts, Google Sheets logging and error handling.

Explanatory workflow visual based on the documented portfolio build — not a live n8n canvas screenshot.

Inside the build

The build is structured around a machine-readable classification result so later steps can route consistently instead of relying on an unstructured AI paragraph.

Explanatory build-detail visual showing structured classification fields, routing safeguards and Google Sheets audit-log fields.

Explanatory build-detail visual derived from the documented workflow logic.

Actual build evidence

This is an authentic n8n canvas screenshot from the Homeowner Email Triage build. It provides build evidence; the System Workflow and Build Logic SVGs remain the clearer client-readable explanations.

Authentic n8n canvas screenshot of the Homeowner Email Triage workflow, showing Gmail trigger, Kimi classification, routing branches, Gmail acknowledgement paths, Google Sheets logs, delivery-failure handling and DAV capture flow.

Actual n8n build screenshot supplied for this portfolio case study. Open the image for a larger view.

Controls & exceptions

Low confidence goes to review

Where the classification is uncertain, the item is routed to a human instead of being treated as safe for automatic handling.

Financial and contractual topics stay human-controlled

Money, contracts and disputes are routed for review rather than receiving an automated substantive response.

Urgent items are surfaced

Safety issues and water ingress are routed for immediate builder attention rather than left in a general queue.

Failures are reported

The error handler catches and reports workflow failures so a message is not silently dropped.

What stays human-controlled

Automation supports visibility, routing, automatic acknowledgement, logging and follow-up. The builder and responsible project team retain construction decisions, commercial decisions, contractual judgement, approvals, scope changes and client-facing decisions that require authorised human action.

Tools used

n8nGmailMoonshot AI · Kimi K2.6Google Sheets
Portfolio disclosure: This is an independently developed portfolio build, not a paid-client case study. It shows how Anna designs reusable workflow systems around recurring construction coordination problems. Builder approvals, commercial decisions, contractual decisions and site actions remain with the builder and responsible project team.