English to Polish Bus/Financial Finance (general) banking

sorry, I sent the wrong term

I need the Polish equiv. for "locbox account"
Lockbox
A bank facility that accelerates the collection of receivables byreducing mail and processing time associated with remittance handling. Under a lockbox arrangement,customers mail remittances to a uniquely zip-coded post office box (lockbox) which the bank then uses to rapidly process credits to a customer's account. All documents accompanying the remittances are forwarded to the company through prearranged channels.