A PO Box is a locked compartment inside a Post Office lobby, rented by the month or the year and checked in person. A virtual mailbox is a subscription: a private mail center rents a real street address, opens what arrives, and emails you a scan. Both solve "I need somewhere for mail to land," but they run on different rulebooks for how you open the account, whether either address can go on a business filing, and what a courier can actually hand over. Checked live against USPS and one virtual mailbox provider on 2026-08-31.
One is a locker you open with a key. The other is a person opening the envelope for you.
| Question | USPS PO Box | Virtual mailbox |
|---|---|---|
| Address form | A box number at a Post Office; a street address only if the branch runs Street Addressing | A real street address with a suite or box number at a private mail center |
| Application form | PS Form 1093 | PS Form 1583 |
| ID required | Two forms shown at the counter, one primary and one secondary | Two forms, one primary and one secondary, same federal standard |
| Signature verification | Not required | Witnessed by the provider in person or real-time video, or notarized, before mail can be accepted |
| Packages from UPS and FedEx | No, unless Street Addressing is enrolled, and then capped at 70 lb and 130 in length plus girth | Yes, from any carrier, at every location the provider checked lists |
| Business or LLC registration | Marketed for a small business, but a box number is not a street address | Often accepted, though the provider itself warns some states and banks refuse it |
| Typical monthly cost | No national price; set per ZIP code and box size by USPS | From 9.99 USD a month at the lowest tier checked, rising with scan and forwarding volume |
Both addresses ask for the same federal identification standard: one primary photo ID and one secondary document, under USPS 608.10. Where they part ways is what happens after the ID is shown. Opening a PO Box is a counter transaction on PS Form 1093 and the box is yours that day. A virtual mailbox is a Commercial Mail Receiving Agency arrangement, and USPS Postal Explorer DMM 508.1.8 requires the applicant to sign PS Form 1583 in the physical or real-time video presence of the provider, or have the signature witnessed by a notary public, before the provider is allowed to accept mail on your behalf.
Anytime Mailbox's own account-opening page, read 2026-08-31, spells out the same two-document rule from the applicant's side: one photo ID and a second document showing a current address, with the name on the form matching the ID exactly. It also offers an online notary session, a video call with a licensed notary who verifies identity and witnesses the signature, so the notarization step does not require a trip anywhere. That extra session is the entire gap between the two: a PO Box is open the moment you leave the counter, and a virtual mailbox is open once a notary has signed off.
USPS positions the PO Box as usable for a small business, and plenty of sole proprietors run one for years without trouble. What it is not is a street address, and a growing share of state Secretary of State portals, banks and payment processors ask for one specifically, which a bare box number cannot satisfy. A virtual mailbox clears that bar because the provider issues an address that reads like any other suite number.
Clearing the format bar is not the same as clearing every rule behind it. Anytime Mailbox's own features page, read 2026-08-31, states plainly: "many customers do use it for LLC registration or banking, some states and institutions may have restrictions," and tells applicants to check with the state licensing board, the IRS or the bank before relying on it. Read that as a caution that applies to both boxes, not a reason to prefer one over the other: whichever address goes on a filing, confirm the recipient will accept a rented mailbox before the paperwork is submitted.
USPS reserves a plain PO Box for mail and USPS-issued notices. A package from a private carrier has nowhere to go unless the specific branch has enrolled the box in Street Addressing, and even then USPS caps what a private carrier can bring to 70 lb and 130 in of combined length and girth.
Because the address is a real street location, Anytime Mailbox states it accepts both mail and packages at every one of its locations from USPS, FedEx, UPS, DHL and other couriers. No published weight or size ceiling sits on top of that on the page we read, though an individual mail center can still decline something too large for its own receiving space.
Signature-required mail (Certified, Registered, Return Receipt) still waits at a counter with photo ID either way, and a residential mailbox at your own home is a third, separate category with its own federal size rule, covered on our PO Box vs a home mailbox guide.
USPS prices a PO Box locally: the rent depends on which of five box sizes your branch has open and whether you pay for three, six or twelve months, and there is no flat national figure to quote. Our PO Box cost guide has the size bands. A virtual mailbox is priced as a subscription instead, and the entry tier we checked at Anytime Mailbox on 2026-08-31 starts at 9.99 USD a month, with per-page scanning and per-shipment forwarding charged separately once you go past what the plan includes. Our virtual mailbox cost guide breaks every provider tier and add-on fee down in full.
A PO Box is a locked compartment at a Post Office that you rent and check in person; it takes USPS mail only, unless the branch offers Street Addressing. A virtual mailbox is a subscription that gives you a real street address at a private mail center, and a person there opens, scans and stores or forwards what arrives, including packages from any carrier.
Only the virtual mailbox does. USPS opens a PO Box on PS Form 1093 with two forms of identification shown at the counter, no notary involved. A virtual mailbox is a Commercial Mail Receiving Agency under USPS rules, and federal regulation 508.1.8 requires the same two forms of ID plus a signature on PS Form 1583 that is notarized or witnessed in real time, in person or by video, before the provider can accept mail on your behalf.
Neither is a guaranteed yes. USPS markets a PO Box as workable for a side business, but a PO Box is not a street address, and many state filing offices and banks want one. A virtual mailbox provider gives a street address with a suite number, which clears that bar more often, but Anytime Mailbox itself tells applicants some states and institutions restrict its use for LLC registration or banking and to check with the state licensing board, the IRS or the bank first.
A virtual mailbox does, because it is a street address rather than a box number; Anytime Mailbox states it accepts mail and packages from USPS, FedEx, UPS, DHL and other couriers at every location. A plain PO Box does not, unless the specific Post Office has enrolled the box in Street Addressing, and even then USPS caps what a private carrier can bring in at 70 pounds and 130 inches of length and girth combined.
A PO Box, in almost every case. USPS prices a box by ZIP code and size with no scanning or forwarding built in, and our PO Box cost guide has the size bands. A virtual mailbox starts around 9.99 USD a month at the lowest tier we checked and climbs from there, because the fee is paying a person to open and scan your mail, not just hold it.