Washington, D.C.—The U.S. Postal Service, facing crushing debt but scrambling to offer deals that appeal to consumers and businesses, will let customers make postal purchases on USPS.com with PayPal and will support the initiative with a new ad campaign. The effort, to debut this month on behalf of first-class mail service, will feature TV spots, direct mail, Web banners, print ads and social media components. The agency developing the campaign is Campbell-Ewald, Warren, Mich, which is the Postal Service's agency of record. Also, on Thursday the Postal Service said it may cut processing facilities, equipment and 35,000 processing jobs to save an estimated $3 billion a year.