USPS Mobile gives customers mobile access to tracking, location lookup, pickup scheduling, price calculation, ZIP Code lookup, Hold Mail, Ship Online, Buy Stamps, Informed Delivery and Change of Address. Some purchase functions require a USPS.com account, and the app does not remove the need to measure, weigh and classify a mailpiece correctly.
Verified facts for this topic
USPS Mobile officially lists tracking, locations, pickup scheduling, price calculation, ZIP Code lookup, Hold Mail, Ship Online, Buy Stamps, Informed Delivery and Change of Address; some purchase functions require a USPS.com account.
Official USPS Mobile features
| Feature | Main use | Important limit |
|---|---|---|
| Track | Check the latest scan information for an eligible item | A label or receipt must provide a valid tracking number |
| Locations | Find Post Offices and supported services | Hours and services vary by location |
| Schedule Pickup | Request an eligible package pickup | Eligibility and preparation rules still apply |
| Calculate a Price | Estimate postage from entered mailpiece details | The result is only as accurate as the weight, dimensions and service selections |
| ZIP Code lookup | Find or verify ZIP Code information | It does not replace a complete deliverable address |
| Hold Mail and Change of Address | Open the related official service workflow | Identity, timing and account requirements may apply |
| Ship Online and Buy Stamps | Access online postage or stamp-purchase options | Some functions require a USPS.com account |
| Informed Delivery | Access eligible mail and package visibility | Eligibility and image availability vary |
How to use the app safely
- Install the current app from the official app store listing linked by USPS.
- Confirm that the publisher and destination are USPS.
- Use a USPS.com account where the selected service requires one.
- Enter the sealed mailpiece’s actual weight and dimensions.
- Review the final service, address, postage and deposit instructions before paying.
The USPS Mobile FAQ is the source for the supported feature list.
What the app does not prove
A mobile estimate is not evidence that an incorrectly described mailpiece has enough postage. The app also does not make every service available for every item, location or account. Interface screens and features change, so this page does not claim a personal app test or reproduce a fixed click-by-click screen sequence.
Letters versus packages
For a letter using physical stamps, the key task remains classification: destination, weight, dimensions, thickness and shape determine postage. For a package, use the online shipping workflow, print or obtain the supported label, and follow the allowed deposit method. For the broader distinction, see the types of postage stamps guide.
Sources and update note
Use the linked primary record for the exact issue, rule or current condition. Prices, availability and platform features can change and should be checked at the time of use.