Pitney Bowes Inc.'s (PBI) second-quarter profit dropped 8.8% as revenue declined amid the weak economic climate and the stronger dollar weighed on results.

The provider of mail products and services lowered its full-year outlook, saying it hadn't seen any indication mail-intensive industries would improve this year, on top of additional declines seen in some key geographies. It also posted results below Wall Street's expectations.

Shares were down 9.4% to $21.30 in after-hours trading following the news. The stock is down about 40% from September, but has slightly rebounded from a 13-year low of $17.62 in November.

Pitney Bowes has posted declining revenue for three quarters, as customers delay orders during the economic slowdown. In response, it has cut jobs over the past couple of years, while adding it would focus on retaining its current customers. Still, Pitney Bowes faces structural challenges to its business, including slowing mail volumes.

Pitney Bowes reported earnings of $117.3 million, or 57 cents a share, down from $128.5 million, or 61 cents a share, a year earlier. Excluding restructuring and tax adjustments, earnings fell to 55 cents from 69 cents.

Revenue decreased 13% to $1.38 billion amid an 8% drop in U.S. mailing revenue and a 28% decrease internationally on the stronger dollar.

Analysts polled by Thomson Reuters expected per-share earnings of 60 cents on revenue of $1.43 billion.

Pitney Bowes now sees adjusted earnings from continuing operations of $2.15 to $2.35, down from its May view of $2.40 to $2.60. Sales are projected to drop 7% to 10%, or 4% to 7% on a constant currency basis, compared with its prior view of down 6% to 9%.

- By John Kell, Dow Jones Newswires; 212-416-2480; john.kell@dowjones.com