Do Not Bend Envelopes
prices mostly outside the sweet spot ($3.39–$8.30) — Do Not Bend Envelopes doesn't clear our bar today.
Flapen Score
Is Do Not Bend Envelopes profitable on Amazon?
According to Flapen's Amazon United Kingdom niche tracking, Do Not Bend Envelopes is a £41K/yr Amazon United Kingdom market (77K searches/yr). The top 5 brands hold 98% of demand. Verdict: Skip it — 32/100.
Do Not Bend 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 -4.5% over the last 90 days and 9.8% of searches end in a purchase.
£41K
revenue / yr
Who owns the niche?
The top 5 brands hold 98% of demand, so 2% of the market is open.
2%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.7★ — the gap to enter on.
0/100
page quality · 9 products
Top Do Not Bend 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
Double Dragon 50-Pack A6 C6 Manilla Hard Board Backed Envelopes | 162mm x 114mm | Please Do Not Bend Printed | Padded & Tamper-Proof | Self-Seal Closure
- Price
- £6.23
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago

20Pcs A4 Envelopes Self-Seal iSOUL 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend Envelope
- Price
- £5.20
- Rating
- 4.7/5
- Reviews
- 2,152
- Age
- 6y ago

Postmaster Please Do Not Bend Envelopes A5 Hardback Peel Seal x 10 Pack C5 Boardback 229 x 162mm
- Price
- £3.39
- Rating
- 4.7/5
- Reviews
- 285
- Age
- 2y ago

Postmaster A5 C5 Do Not Bend Board Back Envelopes 229 x 162 mm Peel Seal 50 Pack Brown
- Price
- £7.77
- Rating
- 4.6/5
- Reviews
- 1,018
- Age
- 4y ago

AKAR Do Not Bend Packaging - A6 Hard Backed Envelopes (162 x 114mm) Cardboard Mailers (Pack of 25)
- Price
- £4.56
- Rating
- 4.7/5
- Reviews
- 157
- Age
- 5y ago
Trending
90-day click momentum
STRBOXONG A6 Hardback Envelopes Do Not Bend C6 Hard Board Backed Envelopes Peel and Seal for 6x4 Photos & Money Gifts Brown Manilla Cardboard Mailers 162 x 114mm Royal Mail Letter(10 Pcs)
- Price
- £3.70
- Rating
- 4.8/5
- Reviews
- 5
- Age
- 3mo ago

Double Dragon 50-Pack A6 C6 Manilla Hard Board Backed Envelopes | 162mm x 114mm | Please Do Not Bend Printed | Padded & Tamper-Proof | Self-Seal Closure
- Price
- £6.23
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago

20Pcs A4 Envelopes Self-Seal iSOUL 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend Envelope
- Price
- £5.20
- Rating
- 4.7/5
- Reviews
- 2,152
- Age
- 6y ago

Postmaster Please Do Not Bend Envelopes A5 Hardback Peel Seal x 10 Pack C5 Boardback 229 x 162mm
- Price
- £3.39
- Rating
- 4.7/5
- Reviews
- 285
- Age
- 2y ago

AKAR Do Not Bend Packaging - A6 Hard Backed Envelopes (162 x 114mm) Cardboard Mailers (Pack of 25)
- Price
- £4.56
- Rating
- 4.7/5
- Reviews
- 157
- Age
- 5y ago
Newest
by launch date
STRBOXONG A6 Hardback Envelopes Do Not Bend C6 Hard Board Backed Envelopes Peel and Seal for 6x4 Photos & Money Gifts Brown Manilla Cardboard Mailers 162 x 114mm Royal Mail Letter(10 Pcs)
- Price
- £3.70
- Rating
- 4.8/5
- Reviews
- 5
- Age
- 3mo ago

UKPAPER 100 A6 / C6 162mm x 114mm Brown/Manilla Strong Hard Card Board Backed Peel and Seal Printed Please Do Not Bend Envelopes x100
- Price
- £8.30
- Rating
- 4.9/5
- Reviews
- 13
- Age
- 1y ago

Double Dragon 50-Pack A6 C6 Manilla Hard Board Backed Envelopes | 162mm x 114mm | Please Do Not Bend Printed | Padded & Tamper-Proof | Self-Seal Closure
- Price
- £6.23
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago

Double Dragon 20-Pack A4 C4 Manilla Hard Board Backed Envelopes | 324mm x 229mm | Please Do Not Bend Printed | Padded & Tamper-Proof | Self-Seal Closure
- Price
- £4.92
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago

Double Dragon 20-Pack A5 C5 Manilla Hard Board Backed Envelopes | 229mm x 162mm | Please Do Not Bend Printed | Padded & Tamper-Proof | Self-Seal Closure
- Price
- £4.34
- Rating
- 4.7/5
- Reviews
- 480
- Age
- 1y ago
Competition: brands, sellers & click share
The top 5 products capture 87% of clicks — a locked-up shelf that new listings rarely crack.
Brands
6 falling
Sellers
11
Top-5 brand share
98%
Top 20: 100%
Top-5 click share
87%
Top 20: 100%
Open market
0%
- Double Dragon43%
- Postmaster24%
- iSOUL21%
- AKAR5%
- STRBOXONG5%
- UKPAPER2%
Do Not Bend Envelopes demand & seasonality
Weekly search volume, with the niche's key stats alongside.
No pronounced peak months · busiest ÷ quietest = 1.3×
Top Do Not Bend Envelopes search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- do not bend envelopes27K/yr
- cardboard envelopes16K/yr
- hardback envelopes5K/yr
- please do not bend envelopes4K/yr
- hard back envelopes3K/yr
- do not bend envelopes a64K/yr
- a6 hardback envelopes3K/yr
- a6 do not bend envelopes3K/yr
- hard envelopes3K/yr
- card backed envelopes3K/yr
What reviews say buyers love and hate about Do Not Bend Envelopes
What buyers mention most, as a share of all reviews.
What buyers love
90% of reviews“Decent Quality”
“Excellent value for money”
“As shown”
“just the right size”
“Sturdy and do their job”
What buyers complain about
67% of reviews“This cannot be erased or wiped away so there is not excuse once its left your hands for anyone to alter its shape”
“Expensive when purchased in a pack of ten”
“Review of A4 do not bend envelopes”
“Only provided 19 instead of the 20 advertised”
Do Not Bend Envelopes return rate & reasons
Why buyers send it back, as a share of all return requests.
0.4%
Return rate
85%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Do Not Bend 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.









