What's happening to the mail? Effective immediately, the Postal Service is not accepting any Standard Mail or Periodicals Mail — from any source — addressed for delivery within the following three-digit ZIP Code ranges: 369, 393, 394, 395, 396, 700, 701 and 704. This emergency action has been taken as a result of severe facility damage, evacuations and other issues resulting from Hurricane Katrina. The postal service is now formulating plans to address the handling of Standard and Periodicals Mail already in the mailstream and addressed for delivery to these eight ZIP Code areas. Express Mail Service has also been suspended in areas damaged by Hurricane Katrina Due to the significant network disruption and catastrophic damage caused by Hurricane Katrina, the sale of Express Mail to the following ZIP Codes is suspended: ZIP Code City/State 365-366 Mobile, AL. 369, 393 Meridian, MS. 394 Hattiesburg, MS. 395 Gulfport, MS. 396 McComb, MS. 700-701 New Orleans, LA. 703 Houma, LA. 704 Mandeville, LA. For updates and further information visit the U.S. Postal Service's web page on weather related service updates.