Allow easier forwarding of attachments.
Don't show notifications for the archive folder.
Use the "contacts" tool to query address book.

"Contacts" is a command line tool to query to the mac os address book,
which is synchronized across phones, backed up in icloud, etc.
Folder switching shortcuts, HTML for some domains

Some domains seem to send really poorly formatted plain text emails,
to the point of illegibility.  So prioritize the html view for those
ones, it's just easier.  Sloppy, but easier.