---
title: "Letterbox Cage — £159K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/letterbox-cage"
last_updated: "2026-07-31T14:08:43.084Z"
locale: en
meta:
description: "Niche score 54/100 · £159K/yr market · 328K searches/yr · £13.64 avg price. Soft demand (-20.7% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · £159K/yr market · 328K searches/yr · £13.64 avg price. Soft demand (-20.7% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Letterbox Cage — £159K/yr Amazon UK Niche (2026) - Flapen"
---
# **letterbox cage**
**Worth a look**
Shows low returns (1.4%), but soft demand (-20.7% this quarter) keeps it on the watch list.
Market size 33Growth 15Conversion 44Competition 62Returns 86Price range 53Avg price 64Brand share 66Review moat 71Quality gap 83
**Returns**
**Great****1.4%**
return rate — above 5% kills the launch gate
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****663.96**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Good****66%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Good****£13.64**
avg listing price — sweet spot $15–$100
**Competition**
**Good****48%**
top-5 click share — leaders hold, buyers still browse
**Price range**
**Good****£7.72–£23.14**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Okay****3.5%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Okay****£159K**
£159K/yr · 328K searches
**Growth**
**Bad****-20.7%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, letterbox cage is a £159K/yr Amazon United Kingdom market (328K searches/yr). The top 5 brands hold 66% of demand. Verdict: Worth a look — 54/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **letterbox cage market data**
- **Units sold / yr**
- **10K–13K**
- avg 100–250/product
- **Revenue / yr**
- **£136K–£171K**
- units × avg price
- **Conversion rate**
- **3.5%**
- **Avg BSR**
- **#276**
- **Page quality**
- **0%**
- **Prime**
- **65%**
- **Sponsored**
- **81%**
- **Out of stock**
- **18.7%**
- **Avg brand age**
- **56 months**
- **Avg seller age**
- **190 days**
## **Competition & brand share**
The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**17 **▼falling
**Sellers**
**27**
**Top-5 brand share**
**66%**
Top 20: 100%
**Top-5 click share**
**48%**
Top 20: 95%
**Open market**
**28%**
- MAMMO27% - Maison & White11% - REPEAK10% - MAIL MORE9% - MAGNA RETAIL8% - HowseHold6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -20.7% search growth over the last 90 days.
8K6KSpike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/uk/diy-tools/letterbox-cage/trend)
## **Top letterbox cage search terms**
- **letter box catcher**169K/yr-26.2%2.7% conv. - **letterbox cage**48K/yr-8.2%3.2% conv. - **letter box cage**23K/yr+2.2%3.2% conv. - **letter catcher**13K/yr-17.7%2.3% conv. - **mail catcher**10K/yr-14.3%2.7% conv. - **letter catcher for front door**9K/yr-11.1%3.1% conv. - **post catcher for letterboxes indoor**9K/yr-15.8%2.8% conv. - **letterbox catcher**8K/yr-33.9%2.9% conv. - **dog proof letter box catcher**5K/yr-0.5%2.2% conv. - **post catcher**8K/yr-30.1%1.9% conv. [**All search terms **](https://flapen.com/research/uk/diy-tools/letterbox-cage/search-terms)
## **Top letterbox cage products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%4%£6K8%£13K12%£19K16%£25K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**MAMMO Letter Box Catcher Post box Mail Catcher Letterbox Cage Alternative Letter Catcher For Front Door Letter Box Cover for letters & small parcels Universal Easy Install No Tools (Clear)**MAMMO**£11.25**4.3★952 rev](https://www.amazon.co.uk/dp/B0CN11XJ22) [2**MAMMO Letter Box Catcher Post box Mail Catcher Letterbox Cage Alternative Letter Catcher For Front Door Letter Box Cover for letters & small parcels Universal Easy Install No Tools (White)**MAMMO**£11.42**4.3★952 rev](https://www.amazon.co.uk/dp/B0C7JNM75Y) [3**Letterbox Cage with Fixings | Mail Catcher Cage | Iron Basket Post Catcher | Door Letter Guard | Outdoor & Indoor Holder for Letters | M&W**Maison & White**£12.76**4.4★1,808 rev](https://www.amazon.co.uk/dp/B07WL7C8KW) [4**Dog Proof Letter Catcher Bag Large Adhesive Letterbox Mail Catcher**REPEAK**£10.40**4.3★359 rev](https://www.amazon.co.uk/dp/B0BDGD14QL) [5**Mail More Front Door Letter Box Catcher No Screws - White Mail Catcher for Letterbox - Post Parcel Holder - Indoor Mail Catcher - Parcel - Bamboo Frame Post Holder - Draught Excluder**MAIL MORE**£22.47**4.3★186 rev](https://www.amazon.co.uk/dp/B0FG8DBFTH)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Large Letterbox Cage & Mail Catcher No-Drill Pet Safe Post Basket for uPVC Wood & Composite Doors Secure White Iron Letter Box Guard with Lift-Top**Generic**£16.59**2 rev1mo ago](https://www.amazon.co.uk/dp/B0H2Z7KPCG) [**Letterbox Cage | Indoor Mail Catcher | Fixings Included | White Post Holder | Large Iron Letter Box Catcher | Door Letter Box Guard | Pet-Safe Door Guard | Internal Postbox**MAGNA RETAIL**£13.26**15 rev8mo ago](https://www.amazon.co.uk/dp/B0FY3FRS8X) [**Letter Box Catcher White Post Catcher for Letterboxes Indoor No Screws Installation Large Capacity Mail Holder for Front Door 52 x 51 cm Polyester Material**XNBTFK**£9.34**27 rev1y ago](https://www.amazon.co.uk/dp/B0FDWS9CGW) [**Letterbox Cage | Indoor Mail Catcher | No Screws or Fixings Required | White Iron Post Box Holder | Large Iron Letter Box Catcher | Post Holder**MAGNA RETAIL**£18.33**141 rev1y ago](https://www.amazon.co.uk/dp/B0DPX9YRZH) [**Bestfor Letter Catcher - Secure Mail Holder Pet-Proof Easy to Install No Bending Needed Ideal for Elderly Durable Metal 3 Sizes for Mail Letters & Small Packages. Medium**Bestfor**£13.35**124 rev1y ago](https://www.amazon.co.uk/dp/B0DND7G4H4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Large Letterbox Cage & Mail Catcher No-Drill Pet Safe Post Basket for uPVC Wood & Composite Doors Secure White Iron Letter Box Guard with Lift-Top**Generic**£16.59**3.0★**▲ 313%**](https://www.amazon.co.uk/dp/B0H2Z7KPCG) [**MAMMO Letter Box Catcher Post box Mail Catcher Letterbox Cage Alternative Letter Catcher For Front Door Letter Box Cover for letters & small parcels Universal Easy Install No Tools (Grey)**MAMMO**£10.25**4.3★**▲ 214%**](https://www.amazon.co.uk/dp/B0CN146G58) [**MAMMO Letter Box Catcher Post box Mail Catcher Letterbox Cage Alternative Letter Catcher For Front Door Letter Box Cover for letters & small parcels Universal Easy Install No Tools (Clear)**MAMMO**£11.25**4.3★**▲ 98%**](https://www.amazon.co.uk/dp/B0CN11XJ22) [**Letterbox Cage | Indoor Mail Catcher | Fixings Included | White Post Holder | Large Iron Letter Box Catcher | Door Letter Box Guard | Pet-Safe Door Guard | Internal Postbox**MAGNA RETAIL**£13.26**4.5★**▲ 69%**](https://www.amazon.co.uk/dp/B0FY3FRS8X) [**Oypla Large Letterbox Door Post Mail Catcher Basket Cage Holder Guard**Oypla**£13.30**3.9★**▲ 31%**](https://www.amazon.co.uk/dp/B075LLCHWH)
**~~View all trending →~~**
## **What buyers say about letterbox cage**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**28%
*“Easy fit”*
**Quality-Overall**15%
*“Good quality, easy to put together”*
**Advertised Vs Actual Product**13%
*“As advertised”*
**Ease Of Use**11%
*“Easy to use”*
**Assembly/Installation**10%
*“Easy install”*
**Value For Money**3%
*“Great value for money”*
**Velcro Quality**3%
*“The velcro attached easily to the door”*
**Design-Overall**2%
*“Well designed excellent product”*
**Efficiency**2%
*“Does the job”*
**Strength**2%
*“Strong”*
### **What buyers complain about **
**Size-Overall**15%
*“this will not fit”*
**Durability**14%
*“It won't last long i dont think”*
**Pet Friendly**9%
*“Definitely not dog proof”*
**Adhesion/Stickiness**9%
*“the sticky tape wouldn't hold”*
**Quality-Overall**7%
*“Very poor quality”*
**Ease Of Use**5%
*“its not easy to get your post out”*
**Assembly/Installation**5%
*“Awkward to Assemble”*
**Functionality-Overall**4%
*“Didnt work”*
**Value For Money**4%
*“Overpriced”*
**Strength**4%
*“fixings are a bit flimsy”*
### **Top return reasons **
**Size-Overall**73%
**Defective Material/Parts**4%
**Compatibility-Overall**3%
**Functionality-Overall**3%
**Strength**2%
**Advertised Vs Actual Product**2%
**Adhesion/Stickiness**2%
**Quality-Overall**1%
**Color**1%
**Material Quality**1%
## **Common questions**
- **Is letterbox cage profitable to sell on Amazon United Kingdom?**
- The niche generates £159K/yr across 26 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -20.7%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the letterbox cage niche?**
- 17 brands and 27 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 66% of demand.
- **What do buyers complain about in letterbox cage?**
- Top complaints mined from reviews: Size-Overall, Durability, Pet Friendly. The return rate is 1.4%.
- **When does demand for letterbox cage peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the letterbox cage niche?**
- Listings span £7.72–£23.14; the average listing price is £13.64 (sweet spot $15–$100). The average incumbent carries 664 reviews — the moat a new listing must climb.
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