Looking for a newsletter browser plugin

Not new to content management systems … am new to WP. It is truly one of the best, easiest CMS around.

Question for those with more WP know how …

The organization I am building a website for has newsletters in the form of HTML documents. I’m looking for a plugin that will display these newsletters and allow users to browse them. I’d like something that could handle multiple directories e.g. a folder called 2010 (for all 2010 newsletters), a folder called 2009 (for all 2009 newsletters), etc., etc. If the site search engine could search them, that would be bonus points.

I’ve looked at some of the standard newsletter plugins but those don’t seem to do what I need them to. Anyone know of a plugin that can do the things I’ve mentioned above?

Thanks in advance!