I get several email newsletters.
I find these very informative. They are filled with news, tips, contests and advice for the writer.
Some of the free newsletters I receive are from the following sights:
Cool Stuff 4 Writers
Publishers Weekly (Children's Bookshelf Newsletter)
Writer MaMa Ezine
And I just recently signed up for a free newsletter at Charlette's Web.
I haven't received a newsletter from her yet, so I can't say what will be in it. But you can always unsubscribe from these if you don't like them.
I know you can sometimes get bogged down with too much email. But, I don't consider these junk emails when they send you informative information that may help you as a writer.
If you like, go to these sights and check them out.