noun
receiving agent; collection agency
A business or service that receives payments or items on behalf of another party, such as a payment collection service or a proxy for receiving goods.
この会社は通信販売の収納代行をしています。
This company handles payment collection for mail-order sales.
収納代行サービスを利用すると、入金確認の手間が省けます。
Using a collection agency service saves you the trouble of confirming payments.
Compound of 収納 (receiving, storage) and 代行 (agency, acting on behalf of).