It has a very word-processory feature set, including a spellchecker and advanced document management.
2
Google Sites also offers users a spellchecker.
3
Word has a pretty good spellchecker and the custom dictionaries are easy to muck around with.
4
Other gripes: a built-in spellchecker would have been nice (the similarly priced Eudora Pro is ahead of Emailer here).
5
They may have spellingcheckers, multimedia support, let you use your favorite editor or word processor, and offer various storage, search, and printing options.