California business resource
USPS Resources for Business Mail and Address Changes
Plan business mail, address changes, PO Boxes, mailing services, and postal standards using official USPS resources.
When to use this guide
Start with the task, not the agency name.
Use USPS resources when moving, selecting a mailing arrangement, sending customer mail, managing a PO Box, or comparing postal services with private mail handling.
Authoritative links
Go directly to the responsible organization.
Important distinction
Know what this resource does not replace.
Postal forwarding, a PO Box, a commercial mail receiving service, and a virtual office serve different purposes. Confirm acceptance with each recipient.
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