Mail Times: South Carolina to Massachusetts (USPS Estimates)

Typical USPS delivery windows for SC → MA:

• First-Class Mail: 2–5 business days
• Priority Mail: 1–3 business days (tracking + $100 insurance)
• Priority Mail Express: 1–2 business days (guaranteed, tracking, $100 insurance)

Holidays, weather, and facility staffing can add a day. For deadlines, use Priority Mail Express and drop off before the posted cut-off time.