To help letter carriers deliver the mail safely, the Postal Service is asking customers to clear snow from in front of mailboxes and also from sidewalks, stairs and porches. "Snow and ice make delivery dangerous and slow," said Postmaster Bill Zawacki. "Maintaining a clear path to the mail box - including steps, porches, walkways and street approach - will help letter carriers maintain consistent delivery service." Delivery service may be delayed or curtailed whenever streets or walkways present hazardous conditions for letter carriers or when snow is plowed against mailboxes. This is done only as a last resort and curtailed mail delivery is attempted again the next delivery day.