This is a different question from this.
Is anybody able to develop a Terminal command that will change the behaviour of swipe settings in Mail?
By default swipe right is 'Mark as Unread/Read' while swipe left is 'Trash'.
The Preferences setting is only able to change the swipe left gesture to 'Archive' instead of 'Trash'. However no such customisation is provided for the swipe right gesture.
I want to be able to swipe right to Archive; it feels more natural and moreover this is the setting on my iPhone as well.