Forward email (SMTP address) vs. Forward email (Address book) management actions

The main difference between the “ Forward email (Address book) ” and the Forward email (SMTP address) ” management actions is that the first one is used for internal forwarding, while the second one is used to forward SMTP addresses to external users. Forward email (Address book) Here you must specify to which internal user you want to forward the mailbox. Checking the box to “ Save local copy ” will deliver mail to the original mailbox and forward it to the new destination.