Common USPS Tips

Email Scams Pretending to be from USPS®

Beware of bogus emails being sent to postal customers. These emails contain false information about package delivery or online postage charges. The emails contain a link or attachment that, when opened, installs a malicious virus that can steal personal information from your PC or phone.

Cybersecurity and Staying Safe Online

Due to the increasing cybersecurity risks inherent in today's internet age, USPS has created CyberSafe at USPS™, a site to help the public learn about growing trends and how to stay safe online.

How to be Cyber Smart

Check Package Status

Sometimes packages are delayed or rerouted because of unusual circumstances. Before contacting us, enter your package’s tracking number on the USPS Tracking® page to check its current status.

USPS Tracking

Start a Missing Mail Search

If your mail or package hasn’t arrived after 7 business days, you can submit a Missing Mail Search Request.

Find Missing Mail

If you weren't home when we tried to deliver your package, you can use the tracking barcode number on the paper slip your carrier left to schedule a redelivery.

Schedule a Redelivery

Changing a Package's Destination

If a package hasn't been delivered or released for delivery, you can return it to the sender or send it to a Post Office™ to be held for pickup.

What Can Be Redirected

  • All domestic mail, except USPS Marketing Mail™ and Periodicals, that has a tracking or extra services barcode.
  • Packages that are smaller than 108 inches of combined length and girth.
    Measuring Package Girth

How to Do a Redirect

  1. Read about Package Intercept® to understand requirements and restrictions for redirecting mail.
  2. Log into your USPS® account.
  3. Go to the Package Intercept application.
  4. Enter your tracking number in the left column to see if your package can be redirected.
  5. Start and pay for the interception.
    Note: Package Intercept fees are only refundable if your shipment is not redirected successfully.
Intercept a Package  About Package Intercept

After-Hours Locations

The Postal Store®
The website sells stamps 24 hours a day.

Approved Postal Providers®
Many grocery and convenience stores sell stamps. They are often open when the Post Office™ is closed.

Self-Service Kiosks
Self-Service Kiosks are located in Post Office lobbies. They are available even when the Post Office counter is closed.

Finding After-Hours Locations

  1. Go to Finding Locations.
  2. Under Location Types, select the provider or service you want to find.
  3. In the search results, click a location to see its services and hours.

Shipping a Package After Hours

  1. Log into your USPS® account.
  2. Visit Click-N-Ship® to pay for postage and print your shipping label.
    Tips for Printing & Shipping
  3. Schedule a free Package Pickup and we'll get your package during regular delivery hours.
    About Online Shipping

Envelopes & Postcards

Forever® Stamps
First-Class™ Forever® stamps are currently $0.55. Forever stamps are always equal in value to the current First-Class Mail® 1-oz price.

Square or Oddly-Shaped Envelope Stamps
Postage for square cards or invitations (under 13 oz) or nonstandard-sized envelopes that have to be hand-cancelled, begins at $0.70.

Postcard Stamps
Standard-sized postcard stamps are $0.35. Oversized postcards are charged as letters or large envelopes.

Envelope Size & Weight Standards

Packages & Boxes

You can compare USPS® services postage rates in our domestic and international price tables. If you enter the size, weight, and destination of your package, the Postage Calculator will give you its exact postage.

Calculate a Price Browse USPS Prices

The US Postal Service™ is enhancing the mail experience with Informed Delivery—an optional notification service that provides eligible residential consumers with a daily digital preview of their household's mail.

Visit the Informed Delivery FAQs if you have questions about the feature, would like to learn how to sign up, or need technical assistance.

Informed Delivery FAQs

You can change your address online. Usually, you will receive mail at your new address 7 to 10 Postal business days after you request your Change of Address (COA). We recommend filling out a COA request 2 weeks to 3 months before you move.

Change Your Address

Need to change your address for a short time? Whether you’re making a long-term move or just using your new address for a few months, your mail can follow you.

We recommend filling out your forwarding request at least 2 weeks in advance. You should receive mail at the forwarding address 7 to 10 Postal business days after you submit your request.

Forward Mail

If you do not want to forward your mail, or you will be gone for 30 days or less, USPS® will hold your mail so it doesn't pile up at your mailbox.

Hold Mail

Browser Issues

If you're having trouble accessing any part of, your browser may be out of date. Some features on are not compatible with older browser versions, so we recommend updating your preferred browser.

Error Messages or Alerts

If an error message is blocking you from a web page, there are several ways to fix the problem.

  • If you have bookmarked this USPS page or placed it in Favorites, delete the bookmark. Restart your browser and go to the page again. If this works, reset your bookmark.
  • Delete your browser's Internet cookies and clear your cache. Restart your browser and go to the page again.
  • Close this browser and open a different browser. Go to the page again. For example, change from Chrome to Internet Explorer.

Technical Support

If you can’t fix the problem, email USPS Technical Support or call 1-800-344-7779 during business hours: Monday – Friday 8 a.m. to 8:30 p.m. ET and Saturday 8 a.m. to 6 p.m. ET.

Please provide this information when you contact us:

  • Web page you were trying to see
  • The exact error message you are getting
  • The browser you are using

Contact Us

If you're having trouble resolving a problem, there are several ways to get help.

Find Out How