Why do so many direct marketers go bald?    One word.  "Undeliverables."  Mail that gets sent back because the address was incorrect.  With the cost of postage today, undeliverables aren't just a waste of effort.  They're a waste of money.  But not to worry - Select Phone thinks of everything.  Click on the mail box icon and create a list of addresses that have the special zip+4 code.  Zip+4 mail gets where it's going - quickly.  And with zip+4 you can create mail that qualifies for special postal discounts (isn't it nice to save money for a change?).