BillDrift

3PL invoice reconciliation for ecommerce teams

Visit Website
September 18, 2026 Why I built BillDrift

I kept coming back to the same problem: 3PL invoices can be surprisingly hard to verify.

You often have the invoice, a rate card and some operational data — but checking whether everything actually lines up still means comparing spreadsheets manually.

That’s why I built BillDrift.

It’s a deterministic 3PL invoice reconciliation tool for ecommerce teams. You upload the evidence you already have, and BillDrift checks what can actually be verified from that data.

Missing evidence simply reduces coverage instead of creating fake findings.

Right now I’m focused on getting real operators and ecommerce teams to run actual audits and tell me where the workflow still falls short.

https://billdrift.heaviside-solutions.com

6 Comments

  1. 1
    The deterministic approach is clear. Have real audits uncovered discrepancies operators would actually dispute or investigate, rather than just flag as anomalies?
    1. 1
      That's exactly the distinction I'm trying to be strict about. A deterministic mismatch by itself isn't enough for me to call something valuable. The important part is whether the underlying evidence is clear enough that an operator can inspect it, understand why it was flagged, and decide whether it actually deserves investigation or action. We've already been able to surface reproducible discrepancies in validation, but I'm deliberately not turning those into claims like “money recovered” or “operators disputed X” before we've seen that happen in real customer/operator audits. So the next validation step is less “can the system find anomalies?” and more “which of these findings survive a real operator's scrutiny and are worth acting on?” I'd rather underclaim that part than make every mismatch look commercially meaningful.
      1. 1
        That makes sense. Would email be easier for continuing this? What’s the best address?
        1. 1
          Absolutely — email works well. You can reach me at [christopher@heaviside-solutions.com](mailto:christopher@heaviside-solutions.com). Happy to continue the conversation there.
          1. 1
            Oops — looks like Indie Hackers turned that into a mailto link 😅 The address is simply: christopher@heaviside-solutions.com
            1. 1
              Thanks! I’ve just sent it over. Looking forward to hearing your thoughts whenever you have a chance.

About

I built BillDrift because 3PL invoices are often difficult to verify without manually comparing spreadsheets, rate cards and operational data. I wanted a deterministic, self-service way for ecommerce teams to reconcile w