MailUSA PO Box vs UPS Store vs Virtual Mailbox: Which Is Right for You?
PO Box vs UPS Store vs Virtual Mailbox: Which Is Right for You?
All three options keep mail away from your home address, but they work differently. A USPS PO Box is a locked box inside a Post Office. As of October 2026, it costs between $31 and $677 for six months depending on the box size and the Post Office, or roughly $5 to $113 a month. A UPS Store mailbox and a virtual mailbox are both what USPS calls a Commercial Mail Receiving Agency (CMRA). They give you a street address with a private mailbox number, accept packages from any carrier, and require a USPS form, PS Form 1583, before they can receive your mail. Each franchise or provider sets its own prices.
This guide compares the three on cost, address format, package handling, access and paperwork, using USPS’s own price list and mail rules.
Key Takeaways
- The PO Box is usually cheapest, but it’s a Post Office address. Packages from UPS, FedEx, Amazon and DHL can reach it only where USPS offers Street Addressing.
- UPS Store and virtual mailboxes give you a street address, which USPS requires to be written with “PMB” (private mailbox) or ”#” before your box number, not “Suite.”
- Virtual mailboxes add online mail images, scanning and forwarding, but you usually can’t walk in and pick up your mail.
- All three require ID. For a PO Box, that’s two forms at the counter. For a CMRA, you also need PS Form 1583, signed in front of the CMRA’s staff or a notary, in person or by live video.
Side-by-Side Comparison
| Feature | USPS PO Box | UPS Store mailbox | Virtual mailbox |
|---|---|---|---|
| Operator | USPS, inside a Post Office | Franchise store acting as a CMRA | Private provider acting as a CMRA |
| Price (as of Oct. 2026) | $31-$677 per 6 months (USPS Notice 123) | Set by each store | Set by each provider |
| Address | PO Box number, or the Post Office’s street address with Street Addressing where offered | Store’s street address + “PMB” or ”#” box number | Facility’s street address + “PMB” or ”#” box number |
| Packages from UPS, FedEx, Amazon, DHL | Only with Street Addressing (subject to availability) | Yes, at participating locations | Depends on provider |
| Access | 24/7 at most Post Offices, but hours vary | Store hours | Online; physical items must be forwarded |
| Mail previews | Free Informed Delivery images of letter-size mail | Text alerts (fees may apply) | Envelope scans and content scanning |
| Paperwork | PS Form 1093 + two forms of ID | PS Form 1583 + two forms of ID | PS Form 1583 + two forms of ID |
| Terms | 3, 6 or 12 months | Set by store | Set by provider |
USPS PO Box
How It Works
You reserve a box online or at the counter, then bring your application and two forms of acceptable ID to the Post Office where the box is. For online applications, you have to do this within 30 days. USPS then gives you two keys or a lock combination. USPS says most Post Offices allow 24/7 PO Box access, though hours vary by location. With 30,972 retail offices in fiscal 2025, there’s a Post Office near almost everyone.
Sizes
USPS lists five sizes, all about 14.75 inches deep, though not every Post Office has every size:
| Size | Opening (height x width) | What USPS says it holds |
|---|---|---|
| XS (Size 1) | 3” x 5.5” | 10-15 letters and 3 rolled magazines |
| S (Size 2) | 5” x 5.5” | 15+ letters, 5 rolled magazines or 1 Small Flat Rate Box |
| M (Size 3) | 5.5” x 11” | Stacked large envelopes and magazines, plus 2 Small Flat Rate Boxes |
| L (Size 4) | 11” x 11” | Small and Medium Flat Rate Boxes plus 10-15 letters |
| XL (Size 5) | 12” x 22.5” | Multiple packages |
If a package doesn’t fit, USPS leaves a slip for counter pickup or puts it in a secure parcel locker, including USPS Smart Lockers at some locations.
What It Costs
PO Box fees depend on box size and the fee group USPS assigns to each Post Office. Notice 123 (effective Oct. 4, 2026) lists two fee schedules, “market dominant” and “competitive,” and USPS publishes which ZIP Codes fall in the competitive groups. Competitive fees are higher for every box size. These are the six-month ranges:
| Size | Market dominant, 6 months | Competitive, 6 months |
|---|---|---|
| XS (1) | $31-$81 | $80-$170 |
| S (2) | $41-$118 | $103-$225 |
| M (3) | $60-$206 | $161-$395 |
| L (4) | $90-$355 | $193-$452 |
| XL (5) | $156-$553 | $270-$677 |
Other details from USPS:
- Payment terms. You can pay for 3, 6 or 12 months. Three-month terms require automatic renewal with no opt-out. Payment is due by the 10th of the month, and an unpaid box is closed on the 11th.
- Fees. Notice 123 lists a $6 deposit per key, $14 for each extra or replacement key after the first two, and $30 for a lock replacement or late payment. Competitive locations charge no deposit for the first two keys.
- Free boxes. Some customers qualify for a free “Group E” box. This applies when USPS doesn’t provide carrier delivery to their physical address, under conditions set out in DMM 508.
Pros and Limitations
Pros:
- Mail is held in a locked box inside a Post Office.
- You can keep a signature on file, so USPS can leave signature-required items in your box or a parcel locker.
- Free Informed Delivery works with PO Boxes and previews your letter-size mail. Our USPS tracking guide explains how it works.
Limitations:
- Private carriers can’t deliver to a PO Box number. USPS’s Street Addressing gives you a street-style address for packages from Amazon, DHL, FedEx and UPS, but only “subject to availability and restrictions.” USPS notes that these additional services aren’t available at all Post Offices.
- You have to visit in person to collect your mail.
- Some banks, employers and other organizations require a residential street address, so ask before you rely on a box.
The UPS Store Mailbox
The UPS Store says its mailboxes provide “a real street address,” that its locations accept shipments from any carrier, and that it will text you when mail or packages arrive. Those features are available at participating locations, and the text alerts may cost extra. Each store is independently owned and sets its own box sizes, prices and terms, so get a quote from the store you’d actually use.
Because a UPS Store accepts mail on your behalf, it’s a CMRA under USPS rules (DMM 508.1.8). That has two practical effects:
- You’ll sign PS Form 1583 and show two forms of ID before the store can receive your mail.
- Your address must use “PMB” or ”#” before your box number, for example “10 MAIN ST PMB 234.” USPS says that if the store’s own address already has a suite number, you must use “PMB” and can’t combine your box number with the store’s suite. Using “Suite” for your box, as some guides suggest, isn’t permitted.
The main limitation is access: you can pick up mail and packages only when the store is open.
Virtual Mailbox
A virtual mailbox provider receives your mail at a processing facility and posts images of the envelopes to an online dashboard or app. You decide what happens next: open and scan the contents, forward the item, or shred or recycle it. Plans vary widely by provider and address location. Compare how many scans are included, the per-item forwarding and handling fees, whether packages are accepted, and whether you can ever pick up in person.
Virtual mailbox operators are CMRAs too, so the same Form 1583 and “PMB” address rules apply. Remote setup is allowed. DMM 508 says you can sign or confirm Form 1583 in the “physical or virtual (in real-time audio and video)” presence of the CMRA’s staff or of a U.S. notary. Physical mail that you need, such as a new credit card or legal papers, has to be forwarded, which takes time and costs postage.
PS Form 1583 and ID: What to Expect
USPS sets the paperwork rules:
- PO Box (PS Form 1093): two forms of acceptable ID. DMM 608 calls for a current photo ID plus a second document that verifies your address, such as a lease, mortgage, deed of trust, voter or vehicle registration card, or home or vehicle insurance policy. USPS doesn’t accept Social Security cards, birth certificates or credit cards.
- CMRA (PS Form 1583): a separate form for each addressee. Spouses each complete their own, and parents can list minors on theirs. The CMRA enters each form and uploads copies of the ID documents into USPS’s CMRA Customer Registration Database, and it must certify those records every quarter.
- When you leave a CMRA: you don’t file a USPS change-of-address order. The CMRA must remail your mail for at least six months after the relationship ends.
Which Option Fits?
Choose a PO Box if you mainly get USPS mail, want the lowest cost, and live near a Post Office with convenient lobby hours. It’s also a simple way to keep mail out of an unsecured home mailbox. For more on keeping deliveries safe, see our package theft prevention guide.
Choose a UPS Store mailbox if you receive packages from several carriers, want a street-style address for a small business, and can get to the store during its hours.
Choose a virtual mailbox if you travel, live abroad or work remotely, and you’re comfortable reading most mail as scans and paying to forward the rest.
If you’ll be shipping from your mailbox as well as receiving, our FedEx vs. UPS vs. USPS comparison and how to ship a package guide cover the carrier side.
Sources
- USPS: PO Boxes (sizes, terms, access, Street Addressing, FAQs) (accessed November 1, 2026)
- USPS: Notice 123 Price List, effective October 4, 2026 (PO Box fees)
- USPS Domestic Mail Manual 508: Recipient services (PO Boxes, Group E, CMRAs and PMB addressing)
- USPS Domestic Mail Manual 608: Forms of identification
- USPS: Informed Delivery
- USPS: Size and Scope (retail offices, fiscal 2025)
- The UPS Store: Mailbox Services (accessed November 1, 2026)