Dan Spengler, CEO of the direct-mail-marketing firm Mailbox Of Savings, took umbrage Monday at the use of the term 'junk mail.' 'I'm sorry, but we didn't earn receipts in excess of $8 million last year by filling people's mailboxes with 'junk,'' Spengler told the offending party. 'How else will potential customers know about bargains like 500 mailing labels for $8.95 or 10 percent off framing at The Great Frame-Up if not by direct mail?' Added Spengler: 'It's not like my company calls people at home like telemarketers. Everyone hates that.' 