- Can I use my own carrier rates?
- What rate discounts are available through my ShipStation account?
- Does ShipStation automatically select the cheapest shipping option?
- Why are my UPS or other carrier rates different in ShipStation?
- How do I start using UPS from ShipStation?
- Why don't my postage charges match what my customers are paying for shipping?
- What Are The USPS Holiday Surcharges?