is saturday considered a business day for mail depends on the postal service and the type of mail. For USPS, Saturday is considered a business day for most services, including Priority Mail, First-Class Mail, and package deliveries. However, some services, such as certain business or government-related mail, may not operate on Saturdays. It’s important to check with the specific carrier or service being used to determine if Saturday is counted as a business day for a particular shipment. Many businesses also operate on Saturdays, making it a standard part of the workweek for deliveries.