---
title: "Mail Slot — $102K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/mail-slot"
last_updated: "2026-08-07T12:53:01.763Z"
locale: en
meta:
description: "Niche score 55/100 · $102K/yr market · 130K searches/yr · $36.08 avg price. High returns (7.8%) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $102K/yr market · 130K searches/yr · $36.08 avg price. High returns (7.8%) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Mail Slot — $102K/yr Amazon US Niche (2026) - Flapen"
---
# **mail slot**
**Worth a look**
Shows no brand lock-in (top 5 brands take 40% of clicks), but high returns (7.8%) keeps it on the watch list.
Market size 25Growth 24Conversion 27Competition 84Returns 15Price range 88Avg price 95Brand share 95Review moat 94Quality gap 70
**Brand share**
**Incredible****40%**
top-5 brand share — no brand owns this niche
**Avg price**
**Incredible****$36.08**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****124.71**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Great****$7.90–$89.93**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Great****31%**
top-5 click share — an open shelf
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Okay****2.2%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Okay****$102K**
$102K/yr · 130K searches
**Growth**
**Bad****-1.9%**
90-day search growth — must beat 0% to launch
**Returns**
**Bad****7.8%**
return rate — above 5% kills the launch gate
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, mail slot is a $102K/yr Amazon United States market (130K searches/yr). The top 5 brands hold 40% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mail slot market data**
- **Units sold / yr**
- **3K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$90K–$108K**
- units × avg price
- **Conversion rate**
- **2.2%**
- **Avg BSR**
- **#37**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **79%**
- **Out of stock**
- **2.0%**
- **Avg brand age**
- **54 months**
- **Avg seller age**
- **171 days**
## **Competition & brand share**
Clicks spread well past the top 5 (31% combined) — an open shelf where new products get seen.
**Brands**
**32 **▲rising
**Sellers**
**65**
**Top-5 brand share**
**40%**
Top 20: 89%
**Top-5 click share**
**31%**
Top 20: 70%
**Open market**
**55%**
- khtumeware16% - Ausolous8% - YORNIALA5% - NUK3Y PRODUCTS K35% - Plugsharge5% - Profasion5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -1.9% search growth over the last 90 days.
3K2K seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/mail-slot/trend)
## **Top mail slot search terms**
- **mail slot**33K/yr-4.9%2.3% conv. - **mail slot for door**12K/yr+50.4%3.3% conv. - **mail slot cover**20K/yr-20.8%0.9% conv. - **door mail slot**14K/yr-4.4%2.7% conv. - **mail slots for walls**8K/yr-8.2%0.9% conv. - **mailbox slot**5K/yr+10.4%2.5% conv. - **door mail slots**6K/yr-3.4%0.8% conv. - **mail slot cover plate**5K/yr+21.4%1.3% conv. - **brass mail slot**4K/yr+42.1%3.0% conv. - **wall mail slot**4K/yr+3.6%0.9% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/mail-slot/search-terms)
## **Top mail slot 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%3%$3K6%$6K9%$9K12%$12K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**khtumeware Matte Black 13 inch 1-Pack Solid Brass Mail Slot with Solid Brass Internal Frame is Well Made Door Mail Slots**khtumeware**$30.73**4.6★146 rev](https://www.amazon.com/dp/B0DFWJDYZN) [2**Ausolous Mail Slot for Door 133.6 Heavy-Duty Iron Door Mail Slot with Pre-Drilled Holes & 8 Screws Included Matte Black Mail Slot for Front Door or Wall Easy DIY Install**Ausolous**$19.75**4.5★26 rev](https://www.amazon.com/dp/B0FK2TKP27) [3**Plugsharge Door Drop Box Mail Slots for Mail Rent Deposit and Night Key Through-the-Door Prevents Money Fishing Locking Steel Mailbox with Rear Access Black**Plugsharge**$64.57**4.4★117 rev](https://www.amazon.com/dp/B0CNQBK9MG) [4**YORNIALA Mail Slot Plate for Front Door 13 x 3.6 Inch Door Letter Slot Rust-Resistant Letter Box Magazine Slot Matte Black Door Hardware & Modern Door Accessories Functional Mail Opening**YORNIALA**$20.11**3.9★7 rev](https://www.amazon.com/dp/B0GR9Q3N3K) [5**ZAUYX 1 Pack 13inch Matte Black Solid Brass Heavy Duty Mail Slot with Solid Brass Heavy Duty Inner Frame for Use in Slots for Doors**ZAUYX**$29.58**4.2★28 rev](https://www.amazon.com/dp/B0DGL5Z9Z7)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**YORNIALA Mail Slot Plate for Front Door 13 x 3.6 Inch Door Letter Slot Rust-Resistant Letter Box Magazine Slot Matte Black Door Hardware & Modern Door Accessories Functional Mail Opening**YORNIALA**$20.11**7 rev4mo ago](https://www.amazon.com/dp/B0GR9Q3N3K) [**Mail Slot Matte Black 13Inch Stainless Steel Mail Slot Cover for Front Door.Mailbox Door Replacement for Wall 133.7 (Gold 10Inch)**Toyvarnix**$31.54**17 rev7mo ago](https://www.amazon.com/dp/B0G55YR9K1) [**Abeicy 1 Pack 13inch Mail Slot Stainless Steel Mail Slot Cover for Front Door to Keep Mails Intact Black**Abeicy**$21.01**12 rev8mo ago](https://www.amazon.com/dp/B0G4C93K1D) [**Qlvily 13-Inch Stainless Steel Mail Slot for Front Door Includes Cover & Mounting Screws Black (13 x 3.7) 1 Pack**Qlvily**$22.33**20 rev8mo ago](https://www.amazon.com/dp/B0G2JPK6KS) [**1 Pack Mail Slot 13 inch Upgrade Well Made Stainless Steel Door Mail Slots for Front Door Matte Black**Aiwaiufu**$20.49**11 rev8mo ago](https://www.amazon.com/dp/B0G2BRZV75)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**YORNIALA Mail Slot Plate for Front Door 13 x 3.6 Inch Door Letter Slot Rust-Resistant Letter Box Magazine Slot Matte Black Door Hardware & Modern Door Accessories Functional Mail Opening**YORNIALA**$20.11**3.9★**▲ 328%**](https://www.amazon.com/dp/B0GR9Q3N3K) [**Mail Slot Matte Black 13Inch Stainless Steel Mail Slot Cover for Front Door.Mailbox Door Replacement for Wall 133.7 (Gold 10Inch)**Toyvarnix**$31.54**4.4★**▲ 281%**](https://www.amazon.com/dp/B0G55YR9K1) [**Ausolous Mail Slot for Door 133.6 Heavy-Duty Iron Door Mail Slot with Pre-Drilled Holes & 8 Screws Included Matte Black Mail Slot for Front Door or Wall Easy DIY Install**Ausolous**$19.75**4.5★**▲ 250%**](https://www.amazon.com/dp/B0FK2TKP27) [**Vintage Brass LETTERS Mail Slot Antique Cast Brass Letter Plate for Front Door Heavy-Duty Mailbox Door Slot Cover Rustic Classic Design for Home Entryway & Office (30x10 cm)**Plaque**$81.38**0.0★**▲ 88%**](https://www.amazon.com/dp/B0G25XYT6D) [**Qlvily 13-Inch Stainless Steel Mail Slot for Front Door Includes Cover & Mounting Screws Black (13 x 3.7) 1 Pack**Qlvily**$22.33**4.7★**▲ 77%**](https://www.amazon.com/dp/B0G2JPK6KS)
**~~View all trending →~~**
## **What buyers say about mail slot**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**14%
*“Easiest installation”*
**Quality-Overall**13%
*“Interesting product”*
**Size-Overall**7%
*“Exact Fit”*
**Design-Overall**7%
*“very well built”*
**Ease Of Use**6%
*“Once installed, it is easy to use”*
**Strength**6%
*“It is sturdy”*
**Advertised Vs Actual Product**5%
*“Worked as described”*
**Value For Money**5%
*“Good price”*
**Locking Mechanism**5%
*“Nice looking mailbox very easy to install I did change the key lock for a thumb twist lock I wish that came as an option for this”*
**Durability**4%
*“Very durable”*
### **What buyers complain about **
**Size-Overall**21%
*“Slot is too short”*
**Design-Overall**5%
*“Poorly designed”*
**Durability**5%
*“Finish is not durable”*
**Ease Of Use**4%
*“didnt close smoothly on its own”*
**Adhesion/Stickiness**4%
*“The original adhesive did not hold”*
**Quality-Overall**4%
*“Feels more decorative than high quality”*
**Functionality-Overall**3%
*“And the lid is not functional”*
**Material Quality**2%
*“That said, the overall look and material feel pretty cheap”*
**Locking Mechanism**2%
*“there isn't any seal”*
**Value For Money**2%
*“Not worth the price”*
### **Top return reasons **
**Size-Overall**67%
**Functionality-Overall**6%
**Advertised Vs Actual Product**5%
**Color**4%
**Compatibility-Overall**4%
**Defective Material/Parts**2%
**Value For Money**1%
**Assembly/Installation**1%
**Mechanism Issues**1%
**Strength**1%
## **Common questions**
- **Is mail slot profitable to sell on Amazon United States?**
- The niche generates $102K/yr across 56 tracked products. 2 of 16 products launched in the last 360 days are still selling. 90-day search growth is -1.9%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the mail slot niche?**
- 32 brands and 65 sellers compete. The top 5 products take 31% of clicks and top 5 brands hold 40% of demand.
- **What do buyers complain about in mail slot?**
- Top complaints mined from reviews: Size-Overall, Design-Overall, Durability. The return rate is 7.8% — above our launch gate.
- **When does demand for mail slot peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the mail slot niche?**
- Listings span $7.90–$89.93; the average listing price is $36.08 (sweet spot $15–$100). The average incumbent carries 125 reviews — the moat a new listing must climb.
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