How Many Stamps Do I Need for a Letter

In our “How Many Stamps Do I Need for a Letter” category, we simplify USPS postage rules so you never under‑ or over‑stamp again. Learn how weight, size, and envelope type affect stamp requirements, plus explore Forever vs. metered postage. Our expert posts include easy‑to‑use charts, mailing hacks, and cost‑saving strategies for bulk mailers. Stay on top of current USPS rate changes and mail with confidence every time.