from Object is of type emailAddress, but it holds a special functionality.
When you have configured your Domain(s) and added authorized senders, you have invited a number of persons / email addresses to act as content generators on your behalf.
from An Object indicating who will appear as sender in the message.
|name||String||The friendly name of the sender|
|address||String (email address)||The actual email address of the sender.|
Must be a well-formed email address. Must not be blank
As with to and cc emailAddress items, from will also be visible to all recipients of the message.