Unfortunately it can be quite common for orders shipped via USPS to have inaccurate tracking information due to USPS carriers inconsistency in scanning packages throughout the journey from us to you.
We often have customers report that a shipment shows "label printed" for several days after we've shipped the package, and often think we haven't shipped the package at all. Look at the below example of a common USPS tracking scenario:
You'll see above that we shipped this customer's package on September 6th. The customer checked tracking on the 7th, 8th, and 9th and was convinced we hadn't actually shipped the package. You'll then see the package suddenly appeared in Louisville on the 10th and was delivered (several days early) on the 11th. This is a great example showing that USPS does not reliably scan a package at each step, which results in these inaccuracies.
This can be common with USPS because our unique cardboard tubes cannot go through the automatic sorting systems and are manually processed.
It's helpful to remember that during checkout you're given a variety of shipping methods with a quoted "arrives by" date of when your package is expected to arrive, and warned before checkout that USPS tracking could be innactute.
As noted during checkout, USPS Priority Mail for posters is not the same as traditinal Priority Mail that arrives in one or two days. This is because the USPS must manually handle our cardboard tubes and they do not meet the ONE and TWO DAY Priority Mail standards. If USPS tracking is showing estimated arrival dates that are earlier than you were quoted, it is because their tracking system does not now the package is a tube. You were quoted an "arrives by" date during checkout for this shipping method, and your package will arrive by that date, not the date quoted by USPS.
Your Quoted "Arrives By" Date
We've found that in virtually every case your package will arrive by the quoted "arrives by" date and it's helpful to not focus on the USPS tracking information and instead expect your package by the date you were quoted. You can find this date on your order confirmation.
If You Need Accurate Tracking
It is never recommended to choose USPS Mail for an order that you need to arrive by a guaranteed time or that you wish to watch the tracking progress. As our shipping screen states, USPS is a great and economical choice when you have time and patience to receive your print via a slower method at the cheapest price. If you need accurate tracking and faster delivery, we highly recommend UPS.