How does ShippingEasy validate addresses?

As part of processing each order, ShippingEasy validates domestic addresses through a US address validation tool from USPS. International addresses are validated through the Melissa Data Global Address Check Tool.

Common Domestic Address Errors

ShippingEasy tries to avoid marking domestic addresses as invalid for minor spelling and punctuation errors. As long as the address is "deliverable" as defined by the latest USPS Delivery Point Validation data, ShippingEasy will not mark the address as invalid.

Instead, ShippingEasy can automatically correct minor spelling and punctuation errors. Learn how to enable auto-correction of minor spelling and punctuation errors in addresses.

These example addresses are eligible for auto-correction by ShippingEasy:

Original Address


Corrected Address

4250 Koval Ln

Los Vegas NV 89109

City is misspelled

4250 Koval Ln

Las Vegas NV 89109-4568

800 Washington Ave

St Louis MO 63101

Abbreviation used instead of the full city name

800 Washington Ave

Saint Louis MO 63101-1202

102Maple St

Denton TX 76201

Missing space after the street number

102 Maple St

Denton TX 76201-6826

359 Old Meramec Station Rd

Ballwin MO 63021

The primary city for the ZIP code specified is used instead of the preferred city for the street address

359 Old Meramec Station Rd

Manchester MO 63021-5324

PO Box 8, 120 N Main St

96, SC29666

The city is numerical instead of text

PO Box 8, 120 N Main St

Ninety Six, SC 29666

1149 Ellsworth Dr

Pasadena, TX 77505

Invalid zip code

1149 Ellsworth Dr

Pasadena, TX 77506-4858

Automatic ZIP Code Correction

For domestic addresses, ShippingEasy will automatically replace invalid ZIP code values whenever the address provides enough information to calculate the correct ZIP code. In addition, ShippingEasy will add the appropriate ZIP+4 code.

Address Errors That Cannot Be Corrected

If a domestic address is not in the USPS Delivery Point Validation database, it is considered invalid by ShippingEasy.

A domestic address is usually marked as invalid for one of two reasons:

  • Incorrect street number or name: For example, 23616 Summer Pine Dr, Spring, TX 77373 has a street number that does not exist. Tax records for that part of Texas list 23614, 23618, and 23622 as valid street numbers for Summer Pine Dr, but not 23616.

  • The address exists but does not receive mail service: The USPS defines an eleven-digit delivery point code for every domestic address. If the USPS has not assigned a delivery point code, then the address is invalid. Example: 940 Constitution Blvd, New Kensington, PA 15068 is an accurate street address but gets no postal service.


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