Vendor Payment Escalator
Vendor Payment Escalator ships as a ready-to-import n8n automation package: load the bundled workflow JSON, connect the credentials listed on this page, and activate it on self-hosted n8n or n8n Cloud.
Automatically chase overdue invoices with AI-written reminder emails, staged escalation logic, and Slack alerts for critical outstanding payments.
- Automatically detect every overdue invoice daily without any manual checking
- Score each invoice into a reminder stage — gentle, firm, or urgent — based on days overdue
- Generate personalized payment reminder emails with AI tailored to the exact escalation stage
- Deliver polished reminders via SendGrid directly from your billing email address
- Alert your Slack channel instantly when an invoice crosses the critical overdue threshold
- Log every reminder sent to Google Sheets for a full accounts-receivable audit trail
- Adjust overdue thresholds and email sender details from a single Config node
Setup Service — optional live install and test. Choose your tier at checkout (not tied to this template's price).
Paste the license key from your receipt. It must match this template.
Workflow summary
One workflow handles everything end-to-end.
- 1Runs on a daily schedule at 9 AM to check all outstanding invoices
- 2Reads every row from your Invoices sheet in Google Sheets
- 3Filters unpaid invoices and calculates how many days each is overdue, assigning a reminder stage (gentle, firm, or critical)
- 4AI writes a personalized payment reminder email matched to the urgency of each escalation stage
- 5Sends the reminder email via SendGrid from your billing address directly to the client
- 6Alerts your Slack channel for any invoice past the critical overdue threshold so your team can follow up manually
- 7Logs every reminder sent to the Reminder Log sheet for a complete accounts-receivable audit trail
What's included with your purchase
Every checkout includes the same practical package so you are never hunting for missing files mid-setup.
- 01Workflow JSON exports ready to import into your n8n workspace (self-hosted or n8n Cloud).
- 02Step-by-step guide that walks credential creation, node-by-node checks, and activation.
- 03Credential checklist for Google Sheets, OpenAI, SendGrid, Slack. Email support@n8ntemplatestore.com if you get stuck — replies within 24 hours (SLA).
- 04Perpetual (lifetime) use license Your one-time purchase includes an ongoing right to use this template package on n8n instances you control for your own automation — not for resale or public redistribution of the files as a product. Terms & conditions.
- 05We keep the copyright Workflow JSON, guides, screenshots, and bundled assets stay our copyrighted works (or our licensors'). Payment grants the limited license in our Terms only — it does not transfer ownership.
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Three steps to a running n8n automation
Import the workflow into n8n
Paste your API keys into the credentials panel
Press ‘activate’ — you’ll get your first report tomorrow morning
Need help setting up this n8n template?
Beginner-friendly guidance is included. Our support team will help you if you get stuck — email support@n8ntemplatestore.com or visit support.
About this template
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