Sub-accounts & API keys
Each client is an isolated tenant with its own key, balance, and shipments.
The shipping-label platform for 3PLs and warehouses
Buy discounted multi-carrier labels in bulk, then resell them to your clients with your markup and prepaid credit — one API, per-client balances, built-in reconciliation.
Turn shipping into a margin line
You already fulfill for many clients. LabelFellow lets you buy labels at platform rates and resell them to each client at your own price — the spread is yours.
Your upstream carrier credentials stay isolated inside the platform, so clients never see your cost or your carrier accounts.
How it works
- Connect once with a single API key.
- Onboard each client as an isolated sub-account.
- Set your markup per client.
- Clients prepay credit in USD; you earn the spread on every label.
- Buy labels via the API — balances and reconciliation are handled for you.
Built for warehouses
Markup & prepaid credit
Set your margin; clients top up in USD and draw down as they ship.
Per-client reconciliation
Every charge, refund, and top-up sits on an auditable ledger per client.
Credentials isolated
Your carrier and upstream accounts never leak to clients or downstream.