As the U.S. Postal Service ramps up for a busy holiday season, the Issaquah branch is hosting an open house to show customers how to use an auto-mail system for packages.

From 8 a.m. to 4 p.m., Nov. 15 an employee will be available in the lobby to teach people how to use the debit-and-credit-card only machines, 400 N.W. Gilman Blvd.