Postmaster says days are numbered for Saturday mail delivery

(By Carly Mallenbaum, USA TODAY) - Falling mail volume and soaring red ink may soon doom Saturday mail delivery and prompt three-day-a-week delivery within 15 years, Postmaster General Patrick Donahoe warns.

Donahoe's forecast is based on a projected $8.3 billion loss this year as the drift from paper to electronic communication hammers the Postal Service. "On Sept. 30," he told the USA TODAY editorial board Tuesday, "I won't be able to pay my bills."

Chief among them: a $5.5 billion payment due Sept. 30 to cover future retirees' health benefits.