Is mailbox insert profitable to sell on Amazon United States?

The niche generates $345K/yr across 31 tracked products. 0 of 21 products launched in the last 360 days are still selling. 90-day search growth is -8.2%. Flapen's verdict: Worth a look (52/100).

How competitive is the mailbox insert niche?

19 brands and 45 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 74% of demand.

What do buyers complain about in mailbox insert?

Top complaints mined from reviews: Magnetic Strength/Adsorption, Size-Overall, Rusts/Corrodes. The return rate is 2.7%.

When does demand for mailbox insert peak?

Demand peaks in Sep; the busiest month runs 1.7× the quietest.

What does it cost to enter the mailbox insert niche?

Listings span $15.60–$352.03; the average listing price is $52.07 (sweet spot $15–$100). The average incumbent carries 350 reviews — the moat a new listing must climb.

mailbox insert

Worth a look

Shows a sweet-spot price point ($52.07 avg), but soft demand (-8.2% this quarter) keeps it on the watch list.

Avg price

Great$52.07

avg listing price — sweet spot $15–$100

Review moat

Great350.42

avg incumbent reviews — the moat a new listing must climb

Competition

Good50%

top-5 click share — leaders hold, buyers still browse

Returns

Good2.7%

return rate — above 5% kills the launch gate

Market size

Good$345K

$345K/yr · 152K searches

Conversion

Good4.3%

search→purchase rate — share of searches ending in a sale

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Brand share

Good74%

top-5 brand share — brands hold most of the demand

Price range

Okay$15.60–$352.03

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Bad-8.2%

90-day search growth — must beat 0% to launch

Signals High Price

According to Flapen's Amazon United States niche tracking, mailbox insert is a $345K/yr Amazon United States market (152K searches/yr). The top 5 brands hold 74% of demand. Demand peaks in Sep. Verdict: Worth a look — 52/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

mailbox insert market data

Units sold / yr: 4K–5K; avg 100–250/product
Revenue / yr: $208K–$260K; units × avg price
Conversion rate: 4.3%
Avg BSR: #79
Page quality: 0%
Prime: 90%
Sponsored: 77%
Out of stock: 5.6%
Avg brand age: 43 months
Avg seller age: 142 days

Competition & brand share

The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.

Brands

19 rising

Sellers

Top-5 brand share

74%

Top 20: 100%

Top-5 click share

50%

Top 20: 86%

Open market

21%

Bayshore Mailbox Company28%
OKBA18%
Generic17%
VELQUA6%
Moxweyeni5%
DIICCYO5%

Demand & seasonality

Weekly Amazon search volume, last 94 weeks — -8.2% search growth over the last 90 days.

Peak months: Sep · busiest ÷ quietest = 1.7×

Open Trend

Top mailbox insert search terms

mailbox door replacement48K/yr -16.3%4.8% conv.
mailbox replacement door20K/yr +6.2%3.7% conv.
mailbox door19K/yr -14.4%3.7% conv.
plastic mailbox door replacement11K/yr -16.9%0.5% conv.
mailbox insert12K/yr +0.0%0.8% conv.
mailbox insert for brick mailbox9K/yr +16.9%0.9% conv.
mailbox lid replacement9K/yr -11.0%4.4% conv.
replacement mailbox door7K/yr -11.7%5.1% conv.
mailbox liner4K/yr +15.3%0.6% conv.
mail box door replacements5K/yr -9.2%4.3% conv.

All search terms

Top mailbox insert 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.

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

6 1/4 Inch (W) by 8 Inch (H) RetroFit Snap-in Replacement Mailbox Door

Bayshore Mailbox Company$34.304.6★3,240 rev

Mailbox Door Replacement 6 1/4 Inch(W) by 8 Inch(H) for Brick Mailbox Door

OKBA$22.474.8★47 rev

6 1/4 W x 8 1/4 H Mailbox Door Replacement Panel Black Galvanized Steel Snap-in Front Door with Flat-Head Screws Easy No-Drill Kit for Standard Residential Curbside & Brick Mailboxes

Generic$30.434.6★21 rev

8 Inch (Width) by 10 Inch (Height) RetroFitSnap-in Mailbox Door Replacement - Black

Bayshore Mailbox Company$43.644.6★1,253 rev

VELQUA 6.25W x 8.25H Arm Scratch Free Mailbox Door Replacement Black Metal Front Panel with Install Kit Fits Most Mailboxes No Tool Hand Tighten Screw Fixed Repair Rusted or Damaged Mailbox Door

VELQUA$20.235.0★4 rev

Newest

by launch date

EZ Mail Tray Mailbox Tray Insert & Extender Slide Out Mailbox Tray for Easy Retrieval Keeps Mail Dry 6 Sizes for Custom Fit Durable & Weather-Resistant Made in USA (Medium: 5.75 x 18)

EZ MAIL TRAY$18.8514 rev

3mo ago

RUBII Magnetic Mailbox Door Replacement 6 1/4 x 8 1/4 Snap-in Mailbox Door Panel Black Metal Mail Box Doors for Outdoor Residential Brick Mailbox Doors Repair

RUBII$21.6810 rev

3mo ago

Mailbox Door Replacement with Number Stickers 6 1/4 W x 8 1/4 H Steel Snap-in Door Magnetic Closure Screws Included Fits Curbside & Brick Mailboxes - Repair Kit for Rusted Mailbox White

FIZZBOP$23.158 rev

4mo ago

Mailbox Replacement Door BlackMagnetic Mailbox Door ReplacementMailboxes Repair Kit 6 1/4(W) x 8 1/4(H) Easy InstallationSuitable for Replacing The Doors of Most Standard Brick Mailboxes

Generic$23.555 rev

5mo ago

Mailbox Door Replacement 6 1/4 Inch(W) by 8 Inch(H) for Brick Mailbox Door

OKBA$22.4747 rev

5mo ago

What buyers say about mailbox insert

What buyers praise and complain about, mined from review topics.

What buyers love

Assembly/Installation19%

“Easy Install”

Size-Overall19%

“fits as described”

Quality-Overall10%

“Excellent product”

Value For Money7%

“Great deal”

Strength6%

“Well made sturdy construction”

Advertised Vs Actual Product5%

“Just what I wanted”

Ease Of Use4%

“EASY”

Magnetic Strength/Adsorption4%

“The magnet is strong”

Efficiency3%

“Works great”

Locking Mechanism3%

“Lid locks well”

What buyers complain about

Magnetic Strength/Adsorption11%

“magnet fell off and cant find”

Size-Overall8%

“It did not fit our mailbox”

Rusts/Corrodes6%

“Its suppose to be brand new and already rusting”

Quality-Overall5%

“Poor quality”

Assembly/Installation5%

“the problem began the I started tightening the screws per the instructions”

Ease Of Use4%

“Hard to close”

Value For Money3%

“Very expensive”

Durability3%

“I'm not sure how long that will last”

Instructions/User Manual/Troubleshooting3%

“Note that instructions were not in the list of things that were included”

Material Quality2%

“I feel like for the price the materials were a little cheap”

Top return reasons

Size-Overall76%

Material Quality3%

Advertised Vs Actual Product3%

Compatibility-Overall3%

Defective Material/Parts2%

Functionality-Overall1%

Assembly/Installation1%

Value For Money1%

Height1%

Magnetic Strength/Adsorption1%

Common questions

Is mailbox insert profitable to sell on Amazon United States?: The niche generates $345K/yr across 31 tracked products. 0 of 21 products launched in the last 360 days are still selling. 90-day search growth is -8.2%. Flapen's verdict: Worth a look (52/100).
How competitive is the mailbox insert niche?: 19 brands and 45 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 74% of demand.
What do buyers complain about in mailbox insert?: Top complaints mined from reviews: Magnetic Strength/Adsorption, Size-Overall, Rusts/Corrodes. The return rate is 2.7%.
When does demand for mailbox insert peak?: Demand peaks in Sep; the busiest month runs 1.7× the quietest.
What does it cost to enter the mailbox insert niche?: Listings span $15.60–$352.03; the average listing price is $52.07 (sweet spot $15–$100). The average incumbent carries 350 reviews — the moat a new listing must climb.