Michel Fortin, on his superb blog, said it all today with the title, “Purging my way to freedom from email clutter.” But his entire post is still well worth the read:
http://www.michelfortin.com/purging-freedom-email-clutter/
You should likewise purge YOUR email box of newsletters that don’t consistently deliver excellent content;
hold those who’ve been given permission to interrupt you to a HIGH standard;
and get yourself free, too.
Purge without remorse.