How to Use a Flag on a Mailbox

The mailbox flag notifies a postal carrier of outgoing mail.

The mailbox signal flag alerts postal carriers of outgoing mail. Most curbside mailboxes have signal flags. The flag is located on the right side, as you face it, of the mailbox. According to the federal standards for curbside mailboxes, florescent orange is the preferred color. With some exceptions, other colors may be used as long as they are a distinctive contrast to the mailbox. Flags in shades of green, white, yellow, blue or brown do not meet federal postal standards.

Things You'll Need

• Outgoing mail
• Mailbox with signal flag

Instructions

1. Inspect outgoing mail to ensure it is properly addressed and has adequate postage.

2. Open the mailbox door and place outgoing mail inside. Close the door.

3. Grasp the signal flag in your hand. Rotate it upward until it is vertical and perpendicular to the ground.

4. A lowered flag confirms mail pickup.

Tips & Warnings

• Use caution when putting checks or other sensitive correspondence in your mailbox. The signal flag can be a useful tool for theft.

References

• United States Postal Service: Standards Governing the Design of Curbside Mailboxes
• United States Postal Service: Recipient Services
• United States Postal Service: Postal Operations