Window Envelopes
FailThe top 5 brands take 99% of clicks, so Window Envelopes is a Fail.
- Flapen Score
- 38 / 100Ranks 660 of 740 Business, Industry & Science niches · −11 vs the category median of 4938
- Market size
- £58K/yr30K searches / yr
- 90-day growth
- -13.4%search demand this quarter
- Competition
- 81%top-5 click share · 6 brands · 15 sellers
Flapen Score
Window Envelopes against its category
The dotted line is the Business, Industry & Science average. Past it, Window Envelopes is stronger. Inside it, weaker.
Market
The Window Envelopes market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Window Envelopes 30K times last year and spent an estimated £58K. The top 5 brands take 99% of clicks. Flapen scores it 38 out of 100, a Fail.
01 · Demand
An estimated 22.8% of those searches ended in a purchase.
Shoppers searched for this 30K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 22.8% of those searches ended in a purchase. Searches in the last 90 days moved -13.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated £58K a year.
- Searches, last 12 months
- 30K
- Growth, 90 days vs prior 90
- -13.4%
- Conversion, latest week
- 22.8%
- Market size, estimated
- £58Ka year
- Peak month
- March1.3× the quietest month
- Top search term
- window envelopes11K searches a year
02 · Price
A sale here is worth £8.46.
Listings sell for £8.46 on average, from £2.60 to £19.45. Amazon reports units sold in ranges. This niche sold 8K to 10K a year. The average listing sells 500 to 750 of them. At £8.46 that is £4K to £6K a year per listing.
- Average price
- £8.46under the $15 to $100 sweet spot
- Price range
- £2.60–£19.45
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 8K–10K
- Units per listing a year
- 500–750
- Revenue per listing a year
- £4K–£6K
- Returns
- 0.2%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is ads.
100% of listings pay for placement with sponsored ads. 73% ship with Prime. On an average day, 8.3% of listings are out of stock. The average listing ranks #39 within Packaging & Shipping Supplies. It carries 482 reviews at 4.52 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 100%
- Prime listings
- 73%
- Out of stock, average day
- 8.3%
- Average rank
- #39in Packaging & Shipping Supplies
- Average rating
- 4.52 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 482per listing
- Listings tracked
- 11
04 · Newcomers
0 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 72 months on average, so the names here are established.
- Launched, last 12 months
- 1
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 72 months
Products
Top Window Envelopes products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 21, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Blake Purely Everyday DL 110 x 220 mm 80gsm Self Seal Window Envelopes (FL2884/500) White - Pack of 500
- Price
- £11.62
- Rating
- 4.5/5
- Reviews
- 915
- Age
- 6y ago

Blake Purely Everyday DL 110 x 220 mm 90 gsm Window Self Seal Wallet Envelopes (13884/50 PR) White - Pack of 50
- Price
- £3.10
- Rating
- 4.6/5
- Reviews
- 461
- Age
- 10y ago

Postmaster DL Window Envelopes 110 x 220mm 80 GSM Self Seal White 1000 Pack
- Price
- £17.04
- Rating
- 4.6/5
- Reviews
- 314
- Age
- 3y ago

Triplast 250 x DL Window Self Seal Security Envelopes (Size: 110x220mm) | Address Window Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home Office & Commercial Use
- Price
- £8.64
- Rating
- 4.6/5
- Reviews
- 581
- Age
- 4y ago

RFE Pack of 100 - DL White Mailing Envelopes with Window Self Seal for Posting mailing Home Office Ecommerce and Business 80gsm 110 x 220mm
- Price
- £8.31
- Rating
- 4.7/5
- Reviews
- 8
- Age
- 1y ago
Trending
estimated 90-day click momentum
DL White Window Envelopes Self Seal 110x220mm 100Gsm Peel and Seal Invoice Letter Envelopes with Clear Window Pack of 30
- Price
- £3.03
- Rating
- 3.8/5
- Reviews
- 5
- Age
- 5mo ago

GP Globe Packaging 50 x DL White Window Self Seal Paper Envelopes (Size: 220x110mm) - Printer Safe & Fully Opaque - Security Mailing Envelopes for Home Office & Business Use
- Price
- £5.15
- Rating
- 4.6/5
- Reviews
- 1,656
- Age
- 14y ago

Blake Purely Everyday C5 229 x 162 mm 90 gsm Self Seal Window Pocket Envelopes (13084/25 PR) White - Pack of 25
- Price
- £2.60
- Rating
- 4.5/5
- Reviews
- 185
- Age
- 12y ago

Blake Purely Everyday DL 110 x 220 mm 90 gsm Window Self Seal Wallet Envelopes (13884/50 PR) White - Pack of 50
- Price
- £3.10
- Rating
- 4.6/5
- Reviews
- 461
- Age
- 10y ago

RFE Pack of 100 - DL White Mailing Envelopes with Window Self Seal for Posting mailing Home Office Ecommerce and Business 80gsm 110 x 220mm
- Price
- £8.31
- Rating
- 4.7/5
- Reviews
- 8
- Age
- 1y ago
Newest
by launch date
DL White Window Envelopes Self Seal 110x220mm 100Gsm Peel and Seal Invoice Letter Envelopes with Clear Window Pack of 30
- Price
- £3.03
- Rating
- 3.8/5
- Reviews
- 5
- Age
- 5mo ago

RFE Pack of 100 - DL White Mailing Envelopes with Window Self Seal for Posting mailing Home Office Ecommerce and Business 80gsm 110 x 220mm
- Price
- £8.31
- Rating
- 4.7/5
- Reviews
- 8
- Age
- 1y ago

Postmaster DL Window Envelopes 110 x 220mm 80 GSM Self Seal White 1000 Pack
- Price
- £17.04
- Rating
- 4.6/5
- Reviews
- 314
- Age
- 3y ago

Triplast 250 x DL Window Self Seal Security Envelopes (Size: 110x220mm) | Address Window Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home Office & Commercial Use
- Price
- £8.64
- Rating
- 4.6/5
- Reviews
- 581
- Age
- 4y ago

Triplast 100 x DL Window Self Seal Security Envelopes (Size: 110x220mm) | Address Window Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home Office & Commercial Use
- Price
- £5.51
- Rating
- 4.6/5
- Reviews
- 581
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 81% of clicks. A locked shelf that new listings rarely crack.
Brands
6 rising
Sellers
15
Est. top-5 brand share
99%
Top 20: 100%
Est. top-5 click share
81%
Top 20: 100%
Open market
0%
- Blake57%
- Postmaster17%
- Triplast15%
- RFE6%
- Globe Packaging3%
- MA NASIR1%
- Open — no brand owns it (0%)
Demand
Window Envelopes search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.3×
Search terms
Top Window Envelopes search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- window envelopes11K/yr
- window envelopes self seal8K/yr
- envelopes with windows5K/yr
- dl window envelopes self seal 10003K/yr
- dl window envelopes4K/yr
Reviews and returns
What reviews say buyers love and hate about Window Envelopes
We read the reviews and the return reasons for every product selling here.
“struggle with quantity and price”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
11 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Window Envelopes questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









