SmileOnMyMac has released PageSender 4, a new version of its fax software for Mac OS X. Major new features include spam filtering, PDF cover pages, direct lookup in Address Book, and fax preview. With fax spam filtering, PageSender 4 users will be able to block incoming faxes via a list of blocked station names. There are options to treat faxes with blank station names as spam and to hang up immediately when a spam fax is detected. PageSender 4 is priced at US$39.95 ($20 upgrade), and requires Mac OS X 10.4 or later.