Aria requires a statement contact’s email address to trigger the statement generation event. For contacts who do not use email, for example a client who only receives printed statements, a dummy email can be configured in Aria for Salesforce.
During syncs, the dummy email configured in Aria General Configurations is only migrated from Salesforce to Aria. When syncing back from Aria to Salesforce, if the "do not use email" parameter is checked, the dummy email address does not sync.