Can't connect to USPS? Are you trying to open USPS but the site is down and seems to be offline today? Check the issue below if it's idle for everyone else or just you!


Server status
80% Full


30% Full


Response time
20% Full

Ping service

In Isnotdown, you can check immediately if USPS works perfectly, or on the contrary, it is registering some kind of problem to offer its services.


The USPS service seems to be working!

USPS frequent failures

USPS (Postal Service US) is an independent federal agency not controlled by the US government for mail services.

It has 8 different services like Express mail which guarantees delivery to the next day regardless of the day. Priority Mail shipments made in three or four days. First Class shipping packages are received depending on the distance between one and four days. Delivery Confirmation service confirms date and time of arrival at the destination, it is an additional payment to normal shipping cost. Certified mail is also additionally paid service and the packet is sent with a professional service which must be signed to receiving. Reply paid is an additional service for mail which is recipient must fill in a form to be returned to the person who made the shipment. Registered Mail is a service that is used to send important documents so you have an extra cost. Finally, insurance is done when it is sent abroad and also has an additional payment.

You may sometimes present USPS error messages to the user you want to make a shipment. However, we indicate Is Not Down to do in each case.

Dimension error plot

This error message appears when you enter incorrect dimensions for parcels is attempted. Solve this by entering the dimensions that match USPS restrictions.

Shipping deadline Error

It may be a fairly common mistake, USPS requires shipping labels are created for the same day before 7pm that day. To resolve this failure, you have to change the date or time of shipping.

Error weight

The user has to take into account the maximum values ​​of implanted USPS weight, greater than zero and up to 70 pounds. Edit the weights of the package from the user interface.

Troubleshooting tips
Problem solved? Still can't connect to USPS? Continue with Step 2.
Turn it on again. Clear internet cookies and browser cache.
Still stuck and not enjoying USPS, then go to Step 3.
Temporarily disable your antivirus or firewall running in the background. Now if you can access USPS, be aware that your security software is causing problems. Try adding USPS in the set of trusted sites.
DNS is a service that translates USPS into a machine-readable address called an IP address. In most cases, this work is done by your ISP. If only specific sites are not opening, it is likely to get corrupted.

Ask for direct help to the administrators of USPS

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