I don't have Mail Looter installed but got something in my mail box where I can click "Take" for a single mail (takes attachments and will delete the mail) or "Take all" for all mails.
I'm not sure which addon this is as I'm currently not a home.
If I remember right it was something that Garkin has worked on later, but I'm not sure anymore.
Can't find the addon here at esoui.com... If I get back home at thursday I can have a look for you.
Maybe it's easy to enhance with keybindings, or already possible.
Edit:
Found it:
http://www.esoui.com/downloads/info8...erAltered.html