usps mail estimated time

usps mail estimated time refers to how long it takes for letters or parcels to reach their destinations based on service type. First-Class Mail usually arrives in 1–5 business days, while Priority Mail ranges from 1–3 business days. Delivery speed can be affected by holidays, weather, or logistics delays. USPS provides estimated delivery times during checkout and on shipping labels, helping senders and recipients plan accordingly and manage expectations effectively.