All that has changed with Communicator. Subordinate Folders Communicator lets you create sub-folders, which allows me to organize my mail much more sensibly. I suppose there are still times I'd rather use Tin, but this is pretty good as it is. However, this is also the place where Communicator sometimes loses its mind, or at least the mouse part of its mind. Although I haven't been able to make Newsgroup searches work at all, the searching within mailbox files has worked beautifully.
Filters Having filters is probably the most appreciated addition.
Filters can move incoming mail into appropriate folders, can mark individual news messages or entire threads as read, all based on the same sort of criteria you would use in searching. This lets me subscribe to mailing lists that generate a lot of mail without having that mail clutter up my inbox, which might cause me to miss other, more important messages. An appropriate filter automatically moves the mail to its own folder where I can examine it at my leisure. The final addition, the HTML editor, was available in the Gold edition previously. Java Some other people have pointed out that some Java pages will cause this version to lock up solid.