Evernote is now a first class citizen for Mail Archiver and you can archive directly to Evernote. You can select a template and customize the title.
Finally the list of mails is Retina, too.
Mail Archiver X will get a big sibling, a Pro version. This version will be capable of handling multiple users.
There are many smaller features and a lot of bugs fixed for version 4.1.
Download a FREE trial of Mail Archiver X:
Version: 4.1 beta 1