{"product_id":"automate-overdue-invoice-alerts-from-pennylane-to-slack","title":"Automate Overdue Invoice Alerts from Pennylane to Slack","description":"\u003cp\u003eStop losing money on forgotten overdue invoices. This n8n workflow automatically monitors your Pennylane account daily and sends instant Slack alerts when customer invoices are 7+ days past due, complete with payment details and direct PDF links.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this workflow does\u003c\/h3\u003e\n\u003cp\u003eRunning automatically at 9 AM daily, this workflow connects to your Pennylane accounting platform to fetch all customer invoices and identify unpaid ones exceeding their deadline by 7 or more days. When overdue invoices are detected, it immediately sends a comprehensive Slack notification containing the invoice number, outstanding amount, days overdue, and a direct link to the invoice PDF. If no invoices require follow-up, the workflow ends silently without unnecessary notifications.\u003c\/p\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinance teams\u003c\/strong\u003e managing multiple client accounts who need systematic overdue invoice tracking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreelancers\u003c\/strong\u003e using Pennylane who want automated payment follow-up reminders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall businesses\u003c\/strong\u003e looking to improve cash flow management through timely invoice collection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccounting departments\u003c\/strong\u003e requiring daily visibility into overdue receivables\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cp\u003eThis workflow leverages n8n's scheduling capabilities with Pennylane API integration and Slack notifications. Built using HTTP Request nodes for Pennylane API calls, Code nodes for invoice filtering logic, Set nodes for data processing, conditional If nodes for workflow control, and Slack integration for alerts.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRequirements:\u003c\/strong\u003e Pennylane account with Essentiel plan or higher, API token with customer_invoices:all scope, and optional Slack workspace access.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSetup:\u003c\/strong\u003e Simply import the workflow, configure Header Auth credentials with your Pennylane Bearer token, select your preferred Slack channel, and optionally adjust the 9 AM schedule trigger.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCustomization:\u003c\/strong\u003e Easily modify the 7-day threshold in the Code Filter node, change scheduling times, or replace Slack notifications with email, Telegram, or other communication channels. Part of a comprehensive 3-workflow Pennylane billing automation suite for complete invoice management.\u003c\/p\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":45455119614131,"sku":"N8N-15189","price":17.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/tep4NlxbrnlQWCee2ouYg_c80cc57fe2a546ec8b70d9c448d33e3b.jpg?v=1776762038","url":"https:\/\/buyflowscripts.com\/products\/automate-overdue-invoice-alerts-from-pennylane-to-slack","provider":"N8N Commerce","version":"1.0","type":"link"}