Hi, I'm Wei — building AI parcel sorting infrastructure for last-mile logistics

🔧 What I'm building

SortLease — AI-powered parcel sorting equipment for Amazon DSPs and last-mile logistics operators.

• FlowSort S15: 21,000 parcels/hour · 99.9% AI accuracy · 2 operators
• Pricing: $0.10/parcel pay-per-parcel · rental from $3,000/month
• Target market: 5,000+ US Amazon Delivery Service Partners
• Seed round open: $5M target · 83% gross margin

📦 Open source tools

DSP Parcel Sorting ROI Calculator

→ Live calculator · Source

Free tool for Amazon DSPs and last-mile operators to calculate ROI of automated sorting vs manual. Enter your daily volume, staff count, wages — see exact monthly savings and payback period.

const DSPCalculator = require('./src/calculator.js');

const result = DSPCalculator.calculate({
  dailyVolume:   5000,   // parcels/day
  currentStaff:  6,      // sorting headcount
  hourlyWage:    22,     // USD/hr
  pricingModel:  'rental'
});

console.log(result.monthlySavings);  // $52,400
console.log(result.annualSavings);   // $628,800
console.log(result.paybackMonths);   // 7 months

Key benchmarks in the calculator:

Method	Cost/parcel	Throughput	Accuracy
Manual sorting	$0.22–$0.30	3,500/hr per operator	94–96%
FlowSort S15 AI	$0.07–$0.10	21,000/hr (2 operators)	99.9%

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📬 Contact

• SortLease: sortlease.com · (406) 479-0215
• Invest: Seed round open
• WhatsApp: +1 (406) 479-0215