Window Envelopes
brand-locked demand (top 5 brands take 99% of clicks) — Window Envelopes doesn't clear our bar today.
Flapen Score
Is Window Envelopes profitable on Amazon?
According to Flapen's Amazon United Kingdom niche tracking, Window Envelopes is a £58K/yr Amazon United Kingdom market (30K searches/yr). The top 5 brands hold 99% of demand. Verdict: Skip it — 38/100.
Window Envelopes: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Not really. Search demand moved -13.4% over the last 90 days and 22.8% of searches end in a purchase.
£58K
revenue / yr
Who owns the niche?
The top 5 brands hold 99% of demand, so 1% of the market is open.
1%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.5★ — the gap to enter on.
0/100
page quality · 11 products
Top Window Envelopes products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 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
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: brands, sellers & click share
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.
Brands
6 rising
Sellers
15
Top-5 brand share
99%
Top 20: 100%
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%)
Window Envelopes demand & seasonality
Weekly search volume, with the niche's key stats alongside.
No pronounced peak months · busiest ÷ quietest = 1.3×
Top Window Envelopes search terms shoppers use
The exact queries shoppers type, with 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
What reviews say buyers love and hate about Window Envelopes
What buyers mention most, as a share of all reviews.
What buyers love
92% of reviews“Good product, What's advertized is what you get”
“Great product - as described”
“Fit for purpose”
What buyers complain about
89% of reviews“struggle with quantity and price”
“adhesive is poor”
“Poor quality all round”
“the paper was a little thinner than expected”
“could be a bit thicker”
Window Envelopes return rate & reasons
Why buyers send it back, as a share of all return requests.
0.2%
Return rate
20%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Window Envelopes questions
The questions sellers ask about this niche, answered from the tracked metrics.
Best Flapen score
The highest-scoring niches we track right now, across every category.









