Use a same-day courier when timing, accountability, and handling matter more than cost. Court filings with today's deadline. Medical specimens that expire in hours. Client contracts needing wet signatures by close of business. Event materials arriving during a load-in window. A courier picks up your item, puts it in a dedicated vehicle, and drives it directly to the recipient. No sorting. No hubs. No shared trucks. GPS tracked with digital proof of delivery. Cost ranges from $50 for a Manhattan envelope to $300+ for cross-borough freight. The value is certainty — you know exactly when it arrives and who received it.