In most cases, couriers price their services by package It's required to deposit first so you can pay for parcel/freight shipping rates through DeftShip balance. Everything is pay as you go, and you pay for what you use only. If you use your own carrier accounts, you will be invoiced directly via these carriers, per usual.
You’re welcome to add your own account for any of the 3+ other carriers that DeftShip supports, and will be charged per-label fee to do so.

In most cases, couriers price their services by package It's required to deposit first so you can pay for parcel/freight shipping rates through DeftShip balance. Everything is pay as you go, and you pay for what you use only. If you use your own carrier accounts, you will be invoiced directly via these carriers, per usual.

No, it's absolutely free to use software. You'll just pay the shipping carrier's actual shipping rates as you go. If you use your own carrier account, You’ll pay the per label fees (Volume discount available).

Yes, if you are a high-volume shipper, you can buy credit for per-label fees.