[Solved] Feature Request: Please add message sender shortcode for email notifications

Hi there,

The email notification for Private Messages only has two shortcodes: a link to the conversation and the message itself. 

Can we get a shortcode added of who it's from? I know it's supposed to be private, but without context, if someone has multiple conversations at once, the email notifications kind of lose their purpose. 

It would be great if we could get a [msg_sender] option added to that.