How Fast Can Letters Travel?

How Fast Can Letters Travel? Mail Class Delivery Speed Tracking USPS Retail Ground 2–8 business days Yes Media Mail 2–8 business days Yes First Class Mail (letters)1–3 business days No First Class Mail (large envelopes) 1–3 business days No How long is mail taking right now? MAIL CLASS DELIVERY STANDARD First-Class Mail®1-5 business days (not