What's the difference between Automated Cleansing mode and Simulated Cleansing mode?

Automated Cleansing mode doesn't require any user action. You use this mode to automatically save cleansed addresses to the database. All cleansed addresses are counted as cleansed by Oracle Address, Email, and Phone Verification.

Simulated Cleansing mode lets you review the addresses verified using Oracle Address, Email, and Phone Verification. You can accept or reject cleansed data in its entirety, by country, or by individual address. All cleansed addresses, irrespective of their accept or reject status, are counted as verified by Oracle Address, Email, and Phone Verification. For example, 100 addresses go through the batch verification and 60 addresses are returned as cleansed. These 60 addresses are counted in Oracle Address, Email, and Phone Verification irrespective of you accepting or rejecting them.