Automate SaaS Invoice Tracking with AgentMail & JigsawStack

Transform your SaaS expense management with this powerful n8n workflow that automatically processes invoice attachments through email, extracts key data using AI-powered parsing, and stores everything in a structured database. Perfect for small business owners and solopreneurs who need the functionality of tools like Spendbase and Ramp without the virtual card overhead.

What this workflow does

This automation creates a seamless invoice tracking system by combining AgentMail's email processing with JigsawStack's intelligent image recognition. When you forward invoices to your dedicated AgentMail inbox, the workflow automatically triggers and processes attachments through multiple validation layers. JigsawStack acts as a gatekeeper, providing image processing and verification, while LlamaCloud handles advanced document parsing to extract crucial invoice data like amounts, dates, and vendor information.

All processed data flows into your PostgreSQL database (optimized for Supabase) with a pre-built schema included in the workflow. Redis integration provides optional caching for improved performance, while webhook triggers via Svix or n8n's built-in system ensure reliable processing.

Use cases

• SaaS subscription tracking: Monitor monthly recurring charges across all your business tools
• Expense categorization: Automatically sort and store vendor invoices for accounting purposes
• Budget monitoring: Track spending patterns and identify cost optimization opportunities
• Audit preparation: Maintain organized digital records of all business expenses

Technical details

• Integrations: AgentMail, JigsawStack API, LlamaCloud, PostgreSQL/Supabase, Redis, Svix
• n8n nodes: Webhook, If, Code, Wait, Switch, Postgres
• Trigger: Email attachments via AgentMail inbox
• Database: Complete schema included as deactivated code node

The workflow includes comprehensive setup documentation and offers a free 15-minute onboarding session to get you running quickly. Perfect for automating your SaaS expense tracking without complex enterprise solutions.