Win Back Lapsed Clients: OpenAI + Gmail from Google Sheets

Win back lapsed clients automatically—using OpenAI + Gmail from your Google Sheets

This n8n workflow reads your lapsed client list in Google Sheets every Monday, generates personalized win-back email drafts with an OpenAI chat model, sends them via Gmail, and updates your sheet with delivery results—plus a staff summary.

What this workflow does

• Runs on a schedule: Executes every Monday morning.
• Validates settings & sheet structure: Checks required headers on the Clients tab and stops if they’re missing.
• Selects the right recipients: Filters for opted-in clients who are lapsed beyond your configured threshold, excludes clients contacted within the cooldown window, prioritizes the highest Total Visits, and enforces a maximum number of emails per run.
• Drafts personalized win-back messages: Uses an OpenAI chat model to generate a short email draft for each selected client and pairs it with the correct client record.
• Ensures message quality before sending: Validates the draft for length, links, placeholders, offers, and correct salutation, then builds the final email including the offer, booking URL, postal address, and unsubscribe instructions.
• Sends and records outcomes: Sends via Gmail (or routes all emails to the staff address in test mode), updates Google Sheets to mark the client as contacted, and writes the delivery result back to the sheet.
• Keeps staff informed: Emails a campaign summary and separately alerts staff about any opted-in rows with invalid IDs, emails, or dates.

Use cases

• Service businesses (salons, clinics, local services) that want a consistent weekly win-back cadence.
• SaaS operators managing churned/paused accounts and using eligibility rules like cooldown windows.
• Automation engineers building an end-to-end “Sheets → OpenAI → Gmail” outreach workflow with logging.

Technical details

• Integrations/nodes used: Google Sheets, OpenAI chat, Gmail
• Workflow nodes called out: if, set, code, gmail, merge, sticky note
• Required column headers: Create a Clients tab with headers including Client ID, Client Name, Client Email, Last Service, Last Visit Date, Total Visits (and the workflow will stop if required headers are missing).