Stop Losing Money to Carrier Billing Errors
PatrolPuffin automatically audits your USPS, UPS, and FedEx invoices to find overcharges, billing errors, and refund opportunities you're missing.
Everything You Need to Recover Lost Revenue
PatrolPuffin catches the billing errors that cost postal retailers thousands every year.
Invoice Audit
Import carrier invoices from UPS, FedEx, and USPS. Our engine automatically matches every charge to the original quote.
Rate Mismatch Detection
Compare quoted rates against billed amounts. Flag discrepancies above your threshold for review or auto-claim.
Late Delivery Claims
Track service guarantee violations. Automatically identify eligible late deliveries and file refund claims.
DIM Weight Analysis
Detect dimensional weight overcharges by comparing declared dimensions to carrier-billed DIM weight.
Surcharge Audit
Catch address correction fees on valid addresses, residential surcharges on commercial addresses, and fuel surcharge errors.
Multi-Carrier Support
USPS, UPS, and FedEx from day one. Automated USPS claims via API, plus formatted dispute reports for UPS and FedEx.
How PatrolPuffin Works
Three simple steps to start recovering money from carrier billing errors.
Connect Your Carriers
Upload UPS and FedEx invoice CSVs, or connect your USPS account for automated ingestion.
We Audit Every Invoice
Our reconciliation engine matches charges to quotes and runs 10 detection rules to find billing errors.
Recover Credits
File claims automatically via USPS API or generate formatted dispute reports for UPS and FedEx portals.
Trusted by Shipping Professionals
“PatrolPuffin caught over
“We used to spend 20 hours a month manually reconciling carrier invoices. Now PatrolPuffin handles it automatically.”
“The DIM weight audit alone saved us thousands. Carriers were consistently overcharging on dimensional weight and we never knew.”
“Setup took 10 minutes and we found our first billing error within the hour. No other audit tool has been this easy.”