Tracking

Mail tracking options, delivery confirmation, and monitoring guides.

ARTICLES

Editorial illustration of envelopes, a red letter sorter and bundled correspondence.

CERTIFIED MAIL · July 2, 2026

Can You Send Certified Mail to a PO Box?

Yes—USPS delivers Certified Mail to PO boxes. Learn how pickup and signatures work, which records to keep, and what to do if the letter is unclaimed.

FIRST-CLASS MAIL · December 14, 2025

Can You Track First-Class Mail? Know Your Options

A regular First-Class letter has no tracking number. Here's how to get one with Certified Mail or Priority Mail, how to add a signature, and what each costs.

Envelope on a desk beside an analog clock and mail tray.

FIRST-CLASS MAIL · December 8, 2025

First-Class Mail Delivery Time: How Long a Letter Takes

USPS delivers First-Class Mail in 1–5 days. Get the expected delivery day for your two ZIP codes, learn how USPS counts the days, and plan a letter that has a deadline.

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