Closing a Mailbox: Forwarding After You Cancel, and the USPS Rules

When you close a private mailbox at Horizon Pack and Ship, you give notice, pick up anything being held, and update your address everywhere it is filed. USPS rules require the mailbox provider to forward your mail for a limited period after you leave, at your postage cost. The mailbox is $20 per month and month-to-month, so there is no cancellation fee to close it.

Most guides on private mailboxes stop at how to open one. The counter sees the other end too, the customer moving after a Fort Knox PCS or an Elizabethtown business winding down, and that side is rarely written down honestly. This post covers it: notice, the forwarding window, the USPS CMRA rule, and what lands in the box after your last day.

How do you close a private mailbox at Horizon Pack and Ship?

You close the box by telling the counter you are leaving and naming your last day. Horizon Pack and Ship rents the private mailbox at $20 per month on a month-to-month basis, so there is no term to break and no cancellation fee. You settle any unpaid month, retrieve held items, and the box closes.

Give notice in person or by phone at the Radcliff counter on (270) 319-4145 or the Elizabethtown counter on (270) 900-1553. Because the account is month-to-month, notice is a courtesy that lets staff stop new mail routing and set up forwarding, not a contract requirement. A week of lead time is enough for staff to clear the box and confirm your forwarding address.

The USPS Form 1583 you signed to open the box stays on file at the store after you leave, which is a federal recordkeeping rule for Commercial Mail Receiving Agencies. You can read the form itself on the USPS Form 1583 page. Nothing about closing requires a second form from you.

How long does a CMRA forward your mail after you close the box?

USPS rules require a Commercial Mail Receiving Agency to forward a former customer's mail for a limited period after service ends, commonly six months, with the customer paying postage. Horizon Pack and Ship follows that rule and quotes the postage plus handling at the counter. After the window closes, later mail is returned to sender.

The rule lives in the USPS Domestic Mail Manual section on Commercial Mail Receiving Agencies, which you can read on the USPS DMM 508 page. It obligates the mailbox operator to forward mail addressed to a departed customer for the defined period, so mail that keeps arriving does not simply vanish on your last day.

Cost is postage plus handling, quoted at the counter when you set up the forward. Horizon Pack and Ship does not publish a per-piece forwarding fee, because postage depends on the weight and class of what actually arrives. You leave a valid forwarding address and a way to reach you, and staff bill the postage as mail goes out. For a deeper walk through forwarding mechanics, see the guide on mail forwarding in Radcliff.

What should you do before you cancel your mailbox?

Update your address everywhere it is on file before your last day, then retrieve anything the counter is holding. The goal is simple: stop new mail from routing to the box, and empty the box, before it closes. Work the list below in order so nothing important lands at a dead address.

1. Change your shipping address with every vendor and marketplace that ships to you, including Amazon, eBay, and any subscription boxes.
2. Update the address on your bank, credit card, and insurance accounts so statements and cards route correctly.
3. Update your business address with the state if the box is your principal office, using the Kentucky Secretary of State filing.
4. Notify the IRS of a business address change with Form 8822-B, described on the IRS address changes page.
5. Pick up every held package and any accumulated mail at the counter.
6. Give the counter your forwarding address and confirm your last paid day.

The order matters because carriers act faster than paperwork. A vendor address you change today stops shipping to the box within a cycle, while a bank statement address can take a full billing period to catch up. Horizon Pack and Ship staff will forward what slips through, and the change on your end is what keeps that volume small. A separate guide covers the address-update sequence in depth at changing a business address with USPS and the IRS.

What happens to each type of mail after the box closes?

Letter mail forwards under the CMRA rule for the limited period, and parcels do not forward the same way. The table below shows what happens to each common mail type once your box is closed. Certified and signature mail needs a person to accept it, so those pieces behave differently from a standard envelope.

Mail type	What happens after the box closes	Your action
First-class letters	Forwarded for the limited USPS period, then returned to sender	Leave a forwarding address; pay postage
Packages (UPS, FedEx, DHL)	Not forwarded by carriers; usually refused or returned to sender	Change vendor shipping address first
USPS parcels	Handled case by case; often returned once the box is closed	Pick up before your last day
Certified and signature mail	Cannot be accepted at a closed box; returned to sender	Redirect the sender to your new address
Magazines and catalogs	Periodicals are not forwarded free; typically dropped or returned	Update the address with each publisher
Government and tax mail	Forwarded within the window, then returned	File Form 8822-B and update the state

Sources: USPS private mail receiving and the USPS DMM 508 CMRA rules. Package handling reflects carrier policy, not USPS forwarding, which is why the vendor address change is the step that protects your parcels.

How do you update your address before you cancel?

Update the address at the source for each type of mail rather than relying on a single forwarding order. A private mailbox address is not eligible for a standard USPS change-of-address forwarding order the way a residence is, so the fix is to change the address directly with every party that sends to the box.

The USPS Change of Address service is built for residential and business street addresses, and it does not extend to a CMRA mailbox the way it covers a home move. The CMRA forwarding under DMM 508 is the mechanism that covers your box instead. Treat the two as separate systems so you do not assume a USPS order is protecting mail it never touched.

Group the updates by how much damage a missed piece causes. Banking, tax, and state filings sit at the top, because a missed notice there carries a penalty or a legal deadline. Vendor and subscription addresses come next. Horizon Pack and Ship forwards the stragglers during the window, and that window is a safety net, not the primary plan.

Who to update	Where	Priority
State business record	Kentucky Secretary of State filing	High
IRS business address	Form 8822-B	High
Bank and credit cards	Each account profile	High
Vendors and marketplaces	Amazon, eBay, wholesalers	Medium
Subscriptions and periodicals	Each publisher account	Low

What happens to packages being held when you close?

You retrieve held packages in person before your last paid day, because carriers do not forward parcels the way letter mail forwards. Anything Horizon Pack and Ship is holding for you, a signed-for vendor delivery or an oversized box, comes to you at the counter when you close the account. Nothing carries over to a closed box.

The counter situation that catches people is the late package. A vendor shipped a UPS box the day before you closed, and it arrives two days after your last day. Horizon Pack and Ship cannot hold it at a closed mailbox, so the box is refused and routes back to the sender. This is exactly why the vendor address change sits first on the checklist.

If you are mid-move during a Fort Knox PCS and cannot predict the last package, tell the Radcliff counter your timeline. Staff near Fort Knox handle PCS departures often and can hold the account open an extra paid week so a straggling delivery lands while the box is still active. A private mailbox stays open as long as it is paid, so a short extension is a $20 decision, not a lost package.

Frequently Asked Questions

How long will Horizon Pack and Ship forward my mail after I close the box?

USPS rules require a Commercial Mail Receiving Agency to forward a former customer's mail for a limited period after service ends, commonly six months, with the customer paying postage. Horizon Pack and Ship follows that rule and quotes postage plus handling at the counter. After the forwarding period ends, mail is returned to sender.

Is there a fee to cancel my private mailbox?

No. The private mailbox at Horizon Pack and Ship is $20 per month and runs month-to-month, so you close it by giving notice and there is no cancellation fee. You pay only postage plus handling if you ask the counter to forward mail after the box closes. Pick up any held packages before your last day.

What happens to packages that arrive after I close my mailbox?

Carriers do not forward parcels the way USPS forwards letter mail, so a package that arrives after the box closes is usually refused or returned to the sender. Retrieve held packages before your last day, and change your shipping address with every vendor first so nothing lands at a closed box.

Do I need to file a USPS change of address when I close a private mailbox?

A private mailbox address is not eligible for a standard USPS change-of-address forwarding order the way a residence is. The mailbox provider handles forwarding directly under the CMRA rules. You still update your address with banks, the state, the IRS, and every vendor before you cancel so mail stops arriving at the old box.

Can I close my mailbox before the forwarding period is over?

Yes. Closing the box and forwarding mail afterward are two separate steps. Once you give notice and pick up your held items, the box closes on your last paid day. Horizon Pack and Ship then forwards mail that keeps arriving for the limited USPS period, and you pay postage for those pieces.

About Horizon Pack and Ship Radcliff

Horizon Pack and Ship is located at 734 Knox Blvd, Radcliff, KY 40160, and the counter answers at (270) 319-4145. The store is open Monday through Saturday, 9 AM to 6 PM, and is veteran-owned, woman-owned, and AAPI-owned. As a USPS-authorized Commercial Mail Receiving Agency, staff file Form 1583 at the counter and accept mail and packages from USPS, UPS, FedEx, and DHL. Services include private mailbox rental, shipping, notary, printing, and freight. Customers rate the Radcliff store 4.9 across 188 or more reviews. The counter serves owners across Radcliff, Muldraugh, Vine Grove, and Meade County near Fort Knox. A second store rents mailboxes in Elizabethtown, and both counters open a private mailbox in Radcliff the same day.

Visit Horizon Pack and Ship at 734 Knox Blvd, Radcliff, KY 40160 or call (270) 319-4145. Open Monday through Saturday, 9 AM to 6 PM.