What default actions can I change?

There are 4 simple default actions that you can amend at anytime, that take immediate effect: 

1. Mail default action | Scan Envelope, Open and Scan. 
2. Receive scans via | Email for, scanned envelopes or envelopes and scanned letters. 
3. Receive forwarding notification's when items are forwarded with tracking details. 
4. Set the maximum number of scanned pages.