Now Putting A Big Stamp On the Era Of the Internet; Pitney Bowes Is Updating The Business of Business Mail
Pitney Bowes Inc is trying to convince investors that it can adapt its business, which was built on selling postage machines, to Internet-oriented world; hardware Pitney sells--copiers, fax machines, postage meters, envelope stuffers--has in recent years moved from stand-alone machines to digital devices plugged into computer networks; Pitney has introduced ISend, service that uses encryption, passwords and tracking features to guarantee privacy and delivery of e-mail; Pitney is about to introduce ClickStamp, which will let customers buy postage from Web; photos; graphs (M)