Whitelist = exclude blocking list

Even numbers in spam DB, it would not be blocked

Blacklist

Block calls from your own choice

Export whitelist & blacklist (for backup)

You could export the white & black list as CSV

Import CSV (Restore backup)

Import whitelist & blacklist from CSV

Long press CSV file in the email, then open in

App would open and import the csv backup, while local backlist and whitelist would be overrided

Remember to reload extension after whitelist import