This article reflects "native" Salesforce emails. If you are sending emails with the Propertybase Send wizard, please read here!
When sending outgoing emails from Propertybase you may see that the From email address defaults to: firstname.lastname@example.org. It is possible to remove this so that the actual senders email is shown. To do this go into Setup > Email Administration > Deliverability. Then under the section Email Security Compliance unmark the checkbox "Enable Sender ID compliance" field.
In addition if you use Gmail you can remove the "via" portion of the From email address by following these instructions: Remove "via" in Gmail