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Can you put parcels in a letterbox?

Author

Mia Kelly

Published Jan 08, 2026

You can post your pre-paid** mail in a postbox if it fits and you don't need proof of postage.

Can you post parcels in a letterbox?

The maximum Parcel size allowed into our new Postboxes is 44cm x 35cm x 16cm. Any Royal Mail Special Delivery Guaranteed items, Royal Mail International Tracked items, and any Royal Mail Tracked Returns without a barcode on the label must be posted in a Post Office branch and cannot be dropped off at a Parcel Postbox.

What size parcel fits through letterbox?

Whilst UK letter boxes can come in varying sizes, most use a standard size of 254mmx38mm (10x1. 5inches), with most postal gift mailings adhering to this size.

Can you put parcels in a red post box?

The postal service has launched the first ever parcel postboxes, allowing us to send pre-paid packages in the same way we currently post letters. This is the first potential change for the iconic red postboxes since its creation 160 years ago.

Can you post large letters in letterbox?

Step 5: Choose a postage option

Large letters have a max width of 25cm, a max length of 35.3cm and a max depth of 2.5cm. Weight also becomes more important with large letters. Large letters up to 100g cost 96p to post 2nd class and £1.29 to post 1st class.

32 related questions found

How big a package can I put in a mailbox?

To drop a package off in a USPS mailbox, it must fit in the mail chute, cannot be a restricted material, not weigh over 14 ounces, and must contain the correct postage, return address, and shipping labels.

Can I put a freepost package in a post box?

As this is a Freepost Named Licence Address this will void the service if any other details are shown. You can simply place this in any local Red Post Box as it is at no cost to yourself. '

Can I put small packages in the mailbox?

Conclusion. In conclusion, yes you can drop a package in a USPS mailbox. You should note that to drop a package in the USPS mailbox your package should not be more than 10 Oz in weight and half inches in thickness.

Can I send small packages in the mailbox?

If your package is less than one-half inch thick and weighs less than 10 oz, you may use postage stamps and do one of the following: Put it in your mailbox for carrier pickup. Drop it in a blue collection box or Post Office lobby mail slot.

Can I drop a small parcel in the post box?

Items weighing 10 oz. or less or 1/2-inch in thickness or less with postage stamps can be deposited in Collection Boxes when: The correct postage, fees, and labels are affixed. Return information is on the mailpiece.

Is a shoe box a small parcel Royal Mail?

What counts as a 'small parcel'? Royal Mail states the maximum dimensions of a small parcel to be 45cm long, 35 cm wide and 16cm deep. That means a small parcel is roughly double the size of the average shoe box.

Can I send a small parcel as a large letter?

Large Dimensions of 35.3cm x 25cm x 2.5cm are quite generous. Large Letters allow you to send documents, small electronics, books, games and CDs. They do have a weight limit of 750g. Royal Mail Small Parcel Dimensions are 45cm x 35cm x 16cm.

How do parcel post boxes work?

What are parcel postboxes? These parcel postboxes will allow small businesses and marketplace sellers to post pre-paid parcels in the same way that they post letters, provided parcels are pre-paid through Click & Drop.

What happens if a letter is too thick UK?

Letters deemed too large will already be filleted and sent to the (not so) local delivery office. Then there are the card companies. Most display a small symbol on the back of a card showing whether it is a standard letter or large letter (though whether many buyers will actually notice the symbol is open to debate).

Can you post A4 envelope in post box?

For mailing contents such as A4 sized documents, DVDs, certificates, large greeting cards and magazines you would need to send as a large letter.

Can I mail packages from home?

What if you need to send a package? You can order free Priority Mail and Priority Mail Express boxes, or other package supplies at usps.com. Again, USPS will deliver items to your address. And at usps.com, using Click-N-Ship, you can print a mailing label with the appropriate postage right from your computer.

Can I put a prepaid package in my mailbox for pickup?

If your packages have domestic shipping labels, you can drop them off at USPS collection locations without waiting in line. If the packages fit, you may drop them off at blue collection mailboxes and Post Office mail drop slots. Some Post Offices may also have a designated spot on the counter for prepaid packages.

How do I ship a small item?

The cheapest way to ship small items under 1 lb is through USPS. USPS First Class Mail is ideal for items under 13 ounces, such as thin and flat items, documents, and letters. Prices start at $0.426 for commercial and $0.58 for non-commercial shipments, with delivery in 1-3 days.

Can you put a first class package in a mailbox?

First-Class Mail® service is an affordable and easy way for your small business to send postcards, envelopes, flats and lightweight packages. When you stick a stamp on an envelope and place it in a mailbox, you are sending something First-Class. In other words, First-Class Mail is “regular” mail.

Can I put a flat rate box in the mailbox?

Yes, small flat rate boxes can fit inside a mailbox depending on the size of your mailbox.

Can you drop small packages in blue mailbox?

The U.S. post office allows consumers to drop packages into the blue mailboxes as long as they can fit and have the correct postage – whether that's by stamps, or postage printed out from Amazon, Stamps.com or Paypal).

Can you put a small parcel in a post box UK?

Postboxes. You can post your pre-paid** mail in a postbox if it fits and you don't need proof of postage.

How does Freepost work in UK?

Freepost Envelopes, which in the UK are also called 'No Stamp Required' Envelopes are part of the Royal Mail response service, are used to encourage customers to reply to you, or your company, without your customer having to pay the Royal Mail's postage cost at their end. You'll pay it for them.

Is DWP first class Freepost?

Also word of warning Freepost is not a 1st or 2nd Class service, if anything its more like a 3rd class service and as such it can take a little longer than normal mail.