What are the main collection methods of P2P collection system?

Whether it is p2p, banks, small loans, etc. The collection methods are basically the same, because they are basically outsourced to professional collection agencies outside, and their main collection methods are as follows:

Electric reminder: as the name implies, the way to call the customer himself or three parties for collection.

Offline door-to-door collection: the customer's address is used for door-to-door collection, especially under supervision now, which has the problem of touching regulatory violations.

Judicial collection: through litigation

Special reminder: collection should be legal and compliant, and the principle of information confidentiality should be observed!